diff --git a/app/Article.py b/app/Article.py
index 566ceb6..98d56b6 100644
--- a/app/Article.py
+++ b/app/Article.py
@@ -9,10 +9,32 @@ from flask import Flask, request, redirect, render_template, url_for, session, a
 from difficulty import get_difficulty_level_for_user, text_difficulty_level, user_difficulty_level
 from model.article import get_all_articles, get_article_by_id, get_number_of_articles
 import logging
-
+import re
 path_prefix = './'
 db_path_prefix = './db/'  # comment this line in deployment
+oxford_words_path='./db/oxford_words.txt'
 
+def count_oxford_words(text, oxford_words):
+    words = re.findall(r'\b\w+\b', text.lower())
+    total_words = len(words)
+    oxford_word_count = sum(1 for word in words if word in oxford_words)
+    return oxford_word_count, total_words
+
+def calculate_ratio(oxford_word_count, total_words):
+    if total_words == 0:
+        return 0
+    return oxford_word_count / total_words
+
+def load_oxford_words(file_path):
+    oxford_words = {}
+    with open(file_path, 'r', encoding='utf-8') as file:
+        for line in file:
+            parts = line.strip().split()
+            word = parts[0]
+            pos = parts[1]
+            level = parts[2]
+            oxford_words[word] = {'pos': pos, 'level': level}
+    return oxford_words
 
 def total_number_of_essays():
     return get_number_of_articles()
@@ -86,6 +108,9 @@ def get_today_article(user_word_list, visited_articles):
 
     today_article = None
     if d:
+        oxford_words = load_oxford_words(oxford_words_path)
+        oxford_word_count, total_words = count_oxford_words(d['text'],oxford_words)
+        ratio = calculate_ratio(oxford_word_count,total_words)
         today_article = {
             "user_level": '%4.1f' % user_level,
             "text_level": '%4.1f' % text_level,
@@ -94,7 +119,8 @@ def get_today_article(user_word_list, visited_articles):
             "article_body": get_article_body(d['text']),
             "source": d["source"],
             "question": get_question_part(d['question']),
-            "answer": get_answer_part(d['question'])
+            "answer": get_answer_part(d['question']),
+            "ratio" : ratio
         }
 
     return visited_articles, today_article, result_of_generate_article
diff --git a/app/db/oxford_words.txt b/app/db/oxford_words.txt
new file mode 100644
index 0000000..62a95f9
--- /dev/null
+++ b/app/db/oxford_words.txt
@@ -0,0 +1,5942 @@
+abandon verb B2
+ability noun A2
+able adjective A2
+abolish verb C1
+abortion noun C1
+about adverb A1
+about preposition A1
+above adverb A1
+above preposition A1
+abroad adverb A2
+absence noun C1
+absent adjective C1
+absolute adjective B2
+absolutely adverb B1
+absorb verb B2
+abstract adjective B2
+absurd adjective C1
+abundance noun C1
+abuse noun C1
+abuse verb C1
+academic adjective B1
+academic noun B2
+academy noun C1
+accelerate verb C1
+accent noun B2
+accept verb A2
+acceptable adjective B2
+acceptance noun C1
+access noun B1
+access verb B1
+accessible adjective C1
+accident noun A2
+accidentally adverb B2
+accommodate verb B2
+accommodation noun B1
+accompany verb B2
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+accordance noun C1
+according to preposition A2
+accordingly adverb C1
+account noun B1
+account verb B2
+accountability noun C1
+accountable adjective C1
+accountant noun B2
+accumulate verb C1
+accumulation noun C1
+accuracy noun B2
+accurate adjective B2
+accurately adverb B2
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+accuse verb B2
+accused noun C1
+achieve verb A2
+achievement noun B1
+acid adjective C1
+acid noun B2
+acknowledge verb B2
+acquire verb B2
+acquisition noun C1
+acre noun C1
+across adverb A1
+across preposition A1
+act noun B1
+act verb A2
+action noun A1
+activate verb B2
+activation noun C1
+active adjective A2
+activist noun C1
+activity noun A1
+actor noun A1
+actress noun A1
+actual adjective B2
+actually adverb A2
+acute adjective C1
+ad noun B1
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+adaptation noun C1
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+addiction noun B2
+addition noun B1
+additional adjective B2
+additionally adverb B2
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+address verb B2
+adequate adjective B2
+adequately adverb B2
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+adjacent adjective C1
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+administer verb C1
+administration noun B2
+administrative adjective C1
+administrator noun C1
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+adoption noun C1
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+adult noun A1
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+advance noun B2
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+advanced adjective B1
+advantage noun A2
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+adverse adjective C1
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+advertisement noun A2
+advertising noun A2
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+after adverb A2
+after conjunction A2
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+aftermath noun C1
+afternoon noun A1
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+again adverb A1
+against preposition A2
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+aged adjective B1
+agency noun B2
+agenda noun B2
+agent noun B1
+aggression noun C1
+aggressive adjective B2
+ago adverb A1
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+agriculture noun B2
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+ahead adverb B1
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+aim noun B1
+aim verb B1
+air noun A1
+aircraft noun B2
+airline noun A2
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+alarm noun B1
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+album noun B1
+alcohol noun B1
+alcoholic adjective B1
+alert adjective C1
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+alien adjective C1
+alien noun B2
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+alignment noun C1
+alike adjective C1
+alike adverb C1
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+all determiner  A1
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+all right adverb A2
+all right exclamation A2
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+allege verb C1
+allegedly adverb C1
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+allocation noun C1
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+alone adverb A2
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+alongside preposition B2
+already adverb A2
+also adverb A1
+alter verb B2
+alternative adjective B1
+alternative noun A2
+although conjunction A2
+altogether adverb B2
+aluminium noun C1
+always adverb A1
+amateur adjective C1
+amateur noun C1
+amazed adjective B1
+amazing adjective A1
+ambassador noun C1
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+ambitious adjective B1
+ambulance noun B2
+amend verb C1
+amendment noun C1
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+amount noun A2
+amount verb B2
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+analyse verb B1
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+anger noun B2
+angle noun B2
+angry adjective A1
+animal noun A1
+animation noun B2
+ankle noun A2
+anniversary noun B2
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+announ cement noun B1
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+annoying adjective B1
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+annually adverb B2
+anonymous adjective C1
+another determiner  A1
+another pronoun A1
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+answer verb A1
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+anxiety noun B2
+anxious adjective B2
+any adverb A2
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+apartment noun A1
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+apology noun B2
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+applaud verb C1
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+arbitrary adjective C1
+architect noun A2
+architectural adjective C1
+architecture noun A2
+archive noun C1
+area noun A1
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+associated adjective B2
+association noun B2
+assume verb B2
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+assure verb B2
+astonishing adjective B2
+asylum noun C1
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+background noun A2
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+billion number A2
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+biology noun A2
+bird noun A1
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+carbon noun B2
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+chief noun B2
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+cigarette noun A2
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+coalition noun C1
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+cognitive adjective C1
+coin noun B1
+coincide verb C1
+coincidence noun B2
+cold adjective A1
+cold noun A1
+collaborate verb C1
+collaboration noun C1
+collapse noun B2
+collapse verb B2
+colleague noun A2
+collect verb A2
+collection noun B1
+collective adjective C1
+collector noun B2
+college noun A1
+collision noun C1
+colonial adjective C1
+colony noun B2
+colour noun A1
+coloured adjective B1
+colourful adjective B2
+column noun A2
+columnist noun C1
+combat noun C1
+combat verb C1
+combination noun B2
+combine verb B1
+come verb A1
+comedy noun A2
+comfort noun B2
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+comfortable adjective A2
+comic adjective B2
+comic noun B2
+command noun B2
+command verb B2
+commander noun B2
+commence verb C1
+comment noun A2
+comment verb B1
+commentary noun C1
+commentator noun C1
+commerce noun C1
+commercial adjective B1
+commercial noun B1
+commission noun B2
+commission verb B2
+commissioner noun C1
+commit verb B1
+commitment noun B2
+committee noun B2
+commodity noun C1
+common adjective A1
+commonly adverb B2
+communicate verb A2
+communication noun B1
+communist adjective C1
+community noun A2
+companion noun C1
+company noun A1
+comparable adjective C1
+comparative adjective B2
+compare verb A1
+comparison noun B1
+compassion noun C1
+compel verb C1
+compelling adjective C1
+compensate verb C1
+compensation noun C1
+compete verb A2
+competence noun C1
+competent adjective C1
+competition noun A2
+competitive adjective B1
+competitor noun B1
+compile verb C1
+complain verb A2
+complaint noun B1
+complement verb C1
+complete adjective A1
+complete verb A1
+completely adverb A2
+completion noun B2
+complex adjective B1
+complex noun B2
+complexity noun C1
+compliance noun C1
+complicated adjective B2
+complication noun C1
+comply verb C1
+component noun B2
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+composer noun B2
+composition noun C1
+compound noun B2
+comprehensive adjective B2
+comprise verb B2
+compromise noun C1
+compromise verb C1
+compulsory adjective B2
+compute verb C1
+computer noun A1
+conceal verb C1
+concede verb C1
+conceive verb C1
+concentrate verb B1
+concentration noun B2
+concept noun B2
+conception noun C1
+concern noun B2
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+concerned adjective B2
+concert noun A1
+concession noun C1
+conclude verb B1
+conclusion noun B1
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+concrete noun B2
+condemn verb C1
+condition noun A2
+conduct noun B2
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+conference noun A2
+confess verb B2
+confession noun C1
+confidence noun B2
+confident adjective B1
+configuration noun C1
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+confirm verb B1
+confirmation noun C1
+conflict noun B2
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+confront verb C1
+confrontation noun C1
+confuse verb B1
+confused adjective B1
+confusing adjective B2
+confusion noun B2
+congratulate verb C1
+congregation noun C1
+congressional adjective C1
+connect verb A2
+connected adjective A2
+connection noun B1
+conquer verb C1
+conscience noun C1
+conscious adjective B2
+consciousness noun C1
+consecutive adjective C1
+consensus noun C1
+consent noun C1
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+consequence noun B1
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+conservation noun B2
+conservative adjective B2
+conservative noun B2
+conserve verb C1
+consider verb A2
+considerable adjective B2
+considerably adverb B2
+consideration noun B2
+consist verb B1
+consistency noun C1
+consistent adjective B2
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+consolidate verb C1
+conspiracy noun B2
+constant adjective B2
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+constituency noun C1
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+constitution noun C1
+constitutional adjective C1
+constraint noun C1
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+construction noun B2
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+consultant noun B2
+consultation noun C1
+consume verb B1
+consumer noun B1
+consumption noun B2
+contact noun B1
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+container noun B1
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+contender noun C1
+content adjective C1
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+context noun A2
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+contract noun B2
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+contribution noun B2
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+controversial adjective B2
+controversy noun B2
+convenience noun B2
+convenient adjective B1
+convention noun B2
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+conversation noun A1
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+convey verb B2
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+convincing adjective B2
+cook noun A2
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+cooker noun A2
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+coordination noun C1
+coordinator noun C1
+cop noun C1
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+copy noun A2
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+copyright noun C1
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+core noun B2
+corner noun A2
+corporate adjective B2
+corporation noun B2
+correct adjective A1
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+correspondence noun C1
+correspondent noun C1
+corresponding adjective C1
+corridor noun B2
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+corruption noun C1
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+cottage noun B1
+cotton noun B1
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+counselling noun C1
+counsellor noun C1
+count noun B1
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+counterpart noun C1
+countless adjective C1
+country noun A1
+countryside noun B1
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+coup noun C1
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+courtesy noun C1
+cousin noun A1
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+cream noun A1
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+credit noun A2
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+crew noun B2
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+criminal adjective B1
+criminal noun A2
+crisis noun B2
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+crystal noun C1
+cue noun B2
+cult adjective C1
+cult noun C1
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+cultural adjective B1
+culture noun A1
+cup noun A1
+cupboard noun A2
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+curly adjective A2
+currency noun B1
+current adjective B1
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+curriculum noun B2
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+curved adjective B2
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+custom noun B1
+customer noun A1
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+cycle noun A2
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+cynical adjective C1
+dad noun A1
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+database noun B2
+date noun A1
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+daughter noun A1
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+diagram noun B1
+dialogue noun A1
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+dictator noun C1
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+diet noun A1
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+difference noun A1
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+disabled adjective B2
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+document noun A2
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+documentation noun C1
+dog noun A1
+dollar noun A1
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+dose noun C1
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+electric adjective A2
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+electronic adjective A2
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+explain verb A1
+explanation noun A2
+explicit adjective C1
+explicitly adverb C1
+explode verb B1
+exploit verb B2
+exploitation noun C1
+exploration noun B2
+explore verb B1
+explosion noun B1
+explosive adjective C1
+explosive noun C1
+export noun B1
+export verb B1
+expose verb B2
+exposure noun B2
+express verb A2
+expression noun A2
+extend verb B2
+extension noun B2
+extensive adjective B2
+extensively adverb B2
+extent noun B2
+external adjective B2
+extra adjective A1
+extra adverb B1
+extra noun B1
+extract noun B2
+extract verb C1
+extraordinary adjective B2
+extreme adjective A2
+extreme noun B2
+extremely adverb A2
+extremist noun C1
+eye noun A1
+fabric noun B2
+fabulous adjective B2
+face noun A1
+face verb B1
+facilitate verb C1
+facility noun B2
+fact noun A1
+faction noun C1
+factor noun A2
+factory noun A2
+faculty noun C1
+fade verb C1
+fail verb A2
+failed adjective B2
+failure noun B2
+fair adjective A2
+fairly adverb B1
+fairness noun C1
+faith noun B2
+fake adjective B2
+fall noun A2
+fall verb A1
+false adjective A1
+fame noun B2
+familiar adjective B1
+family adjective A1
+family noun A1
+famous adjective A1
+fan noun A2
+fancy adjective B1
+fancy verb B1
+fantastic adjective A1
+fantasy noun B2
+far adjective B1
+far adverb A1
+fare noun B2
+farm noun A1
+farm verb A2
+farmer noun A1
+farming noun A2
+fascinating adjective B1
+fashion noun A2
+fashionable adjective B1
+fast adjective A1
+fast adverb A1
+fasten verb B1
+fat adjective A1
+fat noun A2
+fatal adjective C1
+fate noun C1
+father noun A1
+fault noun B2
+favour noun B1
+favour verb B2
+favourable adjective C1
+favourite adjective A1
+favourite noun A1
+fear noun A2
+fear verb B1
+feat noun C1
+feather noun B2
+feature noun A2
+feature verb B1
+February noun A1
+federal adjective B2
+fee noun B2
+feed noun B2
+feed verb A2
+feedback noun B2
+feel noun B2
+feel verb A1
+feeling noun A1
+fellow adjective B2
+female adjective A2
+female noun A2
+feminist adjective C1
+feminist noun C1
+fence noun B1
+festival noun A1
+fever noun B2
+few adjective A1
+few determiner  A1
+few pronoun A1
+fibre noun C1
+fiction noun A2
+field noun A2
+fierce adjective C1
+fifteen number A1
+fifth ordinalnumber A1
+fifty number A1
+fight noun A2
+fight verb A2
+fighting noun B1
+figure noun A2
+figure verb B2
+file noun B1
+file verb B2
+fill verb A1
+film noun A1
+film verb A2
+film-maker noun C1
+filter noun C1
+filter verb C1
+final adjective A1
+final noun A2
+finally adverb A2
+finance noun B2
+finance verb B2
+financial adjective B1
+find verb A1
+finding noun B2
+fine adjective A1
+fine noun C1
+fine verb C1
+finger noun A2
+finish noun A2
+finish verb A1
+fire noun A1
+fire verb B1
+firearm noun C1
+firefighter noun B2
+firework noun B2
+firm adjective B2
+firm noun B2
+firmly adverb B2
+first adverb A1
+first determiner  A1
+first noun A2
+first ordinalnumber A1
+firstly adverb A2
+fish noun A1
+fish verb A2
+fishing noun A2
+fit adjective A2
+fit noun C1
+fit verb A2
+fitness noun B1
+five number A1
+fix noun B2
+fix verb A2
+fixed adjective B1
+fixture noun C1
+flag noun B1
+flame noun B2
+flash noun B2
+flash verb B2
+flat adjective A2
+flat noun A1
+flavour noun B2
+flaw noun C1
+flawed adjective C1
+flee verb C1
+fleet noun C1
+flesh noun C1
+flexibility noun C1
+flexible adjective B2
+flight noun A1
+float verb B2
+flood noun B1
+flood verb B1
+floor noun A1
+flour noun B1
+flourish verb C1
+flow noun B1
+flow verb B1
+flower noun A1
+flu noun A2
+fluid noun C1
+fly noun A2
+fly verb A1
+flying adjective A2
+flying noun A2
+focus noun A2
+focus verb A2
+fold noun B2
+fold verb B1
+folding adjective B2
+folk adjective B1
+folk noun B1
+follow verb A1
+following adjective A2
+following noun B1
+following preposition B2
+fond adjective B2
+food noun A1
+fool noun B2
+foot noun A1
+footage noun C1
+football noun A1
+for preposition A1
+forbid verb B2
+force noun B1
+force verb B1
+forecast noun B2
+forecast verb B2
+foreign adjective A2
+foreigner noun C1
+forest noun A2
+forever adverb B1
+forge verb C1
+forget verb A1
+forgive verb B2
+fork noun A2
+form noun A1
+form verb A1
+formal adjective A2
+format noun B2
+formation noun B2
+former adjective B2
+formerly adverb B2
+formula noun C1
+formulate verb C1
+forth adverb C1
+forthcoming adjective C1
+fortunate adjective B2
+fortunately adverb A2
+fortune noun B2
+forty number A1
+forum noun B2
+forward adjective B2
+forward adverb A2
+fossil noun B2
+foster verb C1
+found verb B2
+foundation noun B2
+founder noun B2
+four number A1
+fourteen number A1
+fourth ordinalnumber A1
+fraction noun B2
+fragile adjective C1
+fragment noun B2
+frame noun B1
+frame verb B1
+framework noun B2
+franchise noun C1
+frankly adverb C1
+fraud noun B2
+free adjective A1
+free adverb A2
+free verb B2
+freedom noun B2
+freely adverb B2
+freeze verb B1
+frequency noun B2
+frequent adjective B2
+frequently adverb B1
+fresh adjective A2
+Friday noun A1
+fridge noun A2
+friend noun A1
+friendly adjective A1
+friendship noun B1
+frighten verb B1
+frightened adjective B1
+frightening adjective B1
+frog noun A2
+from preposition A1
+front adjective A1
+front noun A1
+frozen adjective B1
+fruit noun A1
+frustrated adjective C1
+frustrating adjective C1
+frustration noun C1
+fry verb B1
+fuel noun B1
+fuel verb B2
+fulfil verb B2
+full adjective A1
+full-time adjective B2
+full-time adverb B2
+fully adverb B2
+fun adjective A2
+fun noun A1
+function noun B1
+function verb B2
+functional adjective C1
+fund noun B2
+fund verb B2
+fundamental adjective B2
+fundamentally adverb B2
+funding noun B2
+fundraising noun C1
+funeral noun C1
+funny adjective A1
+fur noun B1
+furious adjective B2
+furniture noun A2
+further adjective A2
+further adverb B1
+furthermore adverb B2
+future adjective A2
+future noun A1
+gain noun B2
+gain verb B2
+gallery noun A2
+gallon noun C1
+gambling noun C1
+game noun A1
+gaming noun B2
+gang noun B2
+gap noun A2
+garage noun B1
+garden noun A1
+gas noun A2
+gate noun A2
+gather verb B1
+gathering noun C1
+gay adjective B2
+gaze noun C1
+gaze verb C1
+gear noun C1
+gender noun B2
+gene noun B2
+general adjective A2
+generally adverb B1
+generate verb B2
+generation noun B1
+generic adjective C1
+generous adjective B1
+genetic adjective B2
+genius noun B2
+genocide noun C1
+genre noun B2
+gentle adjective B1
+gentleman noun B1
+genuine adjective B2
+genuinely adverb B2
+geography noun A1
+gesture noun B2
+get verb A1
+ghost noun B1
+giant adjective B1
+giant noun B1
+gift noun A2
+gig noun B2
+girl noun A1
+girlfriend noun A1
+give verb A1
+glad adjective B1
+glance noun C1
+glance verb C1
+glass noun A1
+glimpse noun C1
+global adjective B1
+globalization noun B2
+globe noun B2
+glorious adjective C1
+glory noun C1
+glove noun B1
+go noun B1
+go verb A1
+goal noun A2
+god noun A2
+gold adjective A2
+gold noun A2
+golden adjective B2
+golf noun A2
+good adjective A1
+good noun A2
+goodbye exclamation A1
+goodbye noun A1
+goodness noun B2
+goods noun B1
+gorgeous adjective B2
+govern verb B2
+governance noun C1
+government noun A2
+governor noun B2
+grab verb B2
+grace noun C1
+grade noun B1
+grade verb B2
+gradually adverb B2
+graduate noun B1
+graduate verb B1
+grain noun B1
+grand adjective B2
+grandfather noun A1
+grandmother noun A1
+grandparent noun A1
+grant noun B2
+grant verb B2
+graphic adjective B2
+graphics noun B2
+grasp noun C1
+grasp verb C1
+grass noun A2
+grateful adjective B1
+grave adjective C1
+grave noun C1
+gravity noun C1
+great adjective A1
+greatly adverb B2
+green adjective A1
+green noun A1
+greenhouse noun B2
+greet verb A2
+grey adjective A1
+grey noun A1
+grid noun C1
+grief noun C1
+grin noun C1
+grin verb C1
+grind verb C1
+grip noun C1
+grip verb C1
+grocery noun B2
+gross adjective C1
+ground noun A2
+group noun A1
+grow verb A1
+growth noun B1
+guarantee noun B2
+guarantee verb B2
+guard noun B1
+guard verb B1
+guerrilla noun C1
+guess noun A1
+guess verb A1
+guest noun A2
+guidance noun C1
+guide noun A2
+guide verb A2
+guideline noun B2
+guilt noun C1
+guilty adjective B1
+guitar noun A1
+gun noun A2
+gut noun C1
+guy noun A2
+gym noun A1
+habit noun A2
+habitat noun B2
+hail verb C1
+hair noun A1
+half adverb A2
+half determiner  A1
+half noun A1
+half pronoun A1
+halfway adverb C1
+hall noun A2
+halt noun C1
+halt verb C1
+hand noun A1
+hand verb B1
+handful noun C1
+handle noun B2
+handle verb B2
+handling noun C1
+handy adjective C1
+hang verb B1
+happen verb A1
+happily adverb A2
+happiness noun B1
+happy adjective A1
+harassment noun C1
+harbour noun B2
+hard adjective A1
+hard adverb A1
+hardly adverb B1
+hardware noun C1
+harm noun B2
+harm verb B2
+harmful adjective B2
+harmony noun C1
+harsh adjective C1
+harvest noun C1
+harvest verb C1
+hat noun A1
+hate noun B1
+hate verb A1
+hatred noun C1
+haunt verb C1
+have verb A1
+have auxiliary verb A2
+have to modal verb A1
+hazard noun C1
+he pronoun A1
+head noun A1
+head verb B1
+headache noun A2
+headline noun B1
+headquarters noun B2
+heal verb B2
+health noun A1
+healthcare noun B2
+healthy adjective A1
+hear verb A1
+hearing noun B2
+heart noun A2
+heat noun A2
+heat verb A2
+heating noun B1
+heaven noun B2
+heavily adverb B1
+heavy adjective A2
+heel noun B2
+height noun A2
+heighten verb C1
+helicopter noun B1
+hell noun B2
+hello exclamation A1
+hello noun A1
+helmet noun B2
+help noun A1
+help verb A1
+helpful adjective A2
+hence adverb B2
+her determiner  A1
+her pronoun A1
+herb noun B2
+here adverb A1
+heritage noun C1
+hero noun A2
+hers pronoun A2
+herself pronoun A2
+hesitate verb B2
+hey exclamation A1
+hi exclamation A1
+hidden adjective B2
+hide verb A2
+hierarchy noun C1
+high adjective A1
+high adverb A2
+high noun B2
+high-profile adjective C1
+highlight noun B1
+highlight verb B1
+highly adverb B1
+highway noun B2
+hilarious adjective B2
+hill noun A2
+him pronoun A1
+himself pronoun A2
+hint noun C1
+hint verb C1
+hip noun B2
+hire noun B2
+hire verb B1
+his determiner  A1
+his pronoun A2
+historian noun B2
+historic adjective B1
+historical adjective B1
+history noun A1
+hit noun A2
+hit verb A2
+hobby noun A1
+hockey noun A2
+hold noun B2
+hold verb A2
+hole noun A2
+holiday noun A1
+hollow adjective B2
+holy adjective B2
+home adjective A2
+home adverb A1
+home noun A1
+homeland noun C1
+homeless adjective B2
+homework noun A1
+honest adjective B1
+honesty noun B2
+honour noun B2
+honour verb B2
+hook noun B2
+hook verb C1
+hope noun A2
+hope verb A1
+hopeful adjective C1
+hopefully adverb B2
+horizon noun C1
+horn noun C1
+horrible adjective B1
+horror noun B1
+horse noun A1
+hospital noun A1
+host noun B1
+host verb B2
+hostage noun C1
+hostile adjective C1
+hostility noun C1
+hot adjective A1
+hotel noun A1
+hour noun A1
+house noun A1
+house verb B2
+household noun B2
+housing noun B2
+how adverb A1
+however adverb A1
+huge adjective A2
+human adjective A2
+human noun A2
+humanitarian adjective C1
+humanity noun C1
+humble adjective C1
+humorous adjective B2
+humour noun B2
+hundred number A1
+hunger noun B2
+hungry adjective A1
+hunt noun B2
+hunt verb B1
+hunting noun B2
+hurricane noun B1
+hurry noun B1
+hurry verb B1
+hurt adjective A2
+hurt noun B2
+hurt verb A2
+husband noun A1
+hydrogen noun C1
+hypothesis noun B2
+I pronoun A1
+ice noun A1
+ice cream noun A1
+icon noun B2
+ID noun B2
+idea noun A1
+ideal adjective A2
+ideal noun B2
+identical adjective B2
+identification noun C1
+identify verb A2
+identity noun B1
+ideological adjective C1
+ideology noun C1
+idiot noun C1
+if conjunction A1
+ignorance noun C1
+ignore verb B1
+ill adjective A2
+illegal adjective B1
+illness noun A2
+illusion noun B2
+illustrate verb B2
+illustration noun B2
+image noun A2
+imagery noun C1
+imaginary adjective B1
+imagination noun B2
+imagine verb A1
+immediate adjective B1
+immediately adverb A2
+immense adjective C1
+immigrant noun B1
+immigration noun B2
+imminent adjective C1
+immune adjective B2
+impact noun B1
+impact verb B1
+impatient adjective B2
+implement verb B2
+implementation noun C1
+implication noun B2
+imply verb B2
+import noun B1
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+importance noun B1
+important adjective A1
+impose verb B2
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+impress verb B2
+impressed adjective B2
+impression noun B1
+impressive adjective B1
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+imprisonment noun C1
+improve verb A1
+improvement noun B1
+in adverb A1
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+inadequate adjective C1
+inappropriate adjective C1
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+inch noun B2
+incidence noun C1
+incident noun B2
+inclined adjective C1
+include verb A1
+included adjective A2
+including preposition A2
+inclusion noun C1
+income noun B2
+incorporate verb B2
+incorrect adjective B2
+increase noun A2
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+increasingly adverb B2
+incredible adjective A2
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+incur verb C1
+indeed adverb B1
+independence noun B2
+independent adjective A2
+index noun B2
+indicate verb B1
+indication noun B2
+indicator noun C1
+indictment noun C1
+indigenous adjective C1
+indirect adjective B1
+individual adjective A2
+individual noun A2
+indoor adjective B1
+indoors adverb B1
+induce verb C1
+indulge verb C1
+industrial adjective B2
+industry noun A2
+inequality noun C1
+inevitable adjective B2
+inevitably adverb B2
+infamous adjective C1
+infant noun C1
+infect verb C1
+infection noun B2
+infer verb B2
+inflation noun B2
+inflict verb C1
+influence noun B1
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+influential adjective C1
+info noun B2
+inform verb B2
+informal adjective A2
+information noun A1
+infrastructure noun B2
+ingredient noun B1
+inhabitant noun B2
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+inherit verb B2
+inhibit verb C1
+initial adjective B2
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+initiate verb C1
+initiative noun B2
+inject verb C1
+injection noun C1
+injure verb B1
+injured adjective B1
+injury noun A2
+injustice noun C1
+ink noun B2
+inmate noun C1
+inner adjective B2
+innocent adjective B1
+innovation noun B2
+innovative adjective B2
+input noun B2
+inquiry noun B2
+insect noun A2
+insert verb B2
+insertion noun C1
+inside adjective A2
+inside adverb A2
+inside noun A2
+inside preposition A2
+insider noun C1
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+insist verb B2
+inspect verb C1
+inspection noun C1
+inspector noun B2
+inspiration noun C1
+inspire verb B2
+install verb B2
+installation noun B2
+instance noun B2
+instant adjective B2
+instantly adverb B2
+instead adverb A2
+instinct noun C1
+institute noun B2
+institution noun B2
+institutional adjective C1
+instruct verb C1
+instruction noun A2
+instructor noun A2
+instrument noun A2
+instrumental adjective C1
+insufficient adjective C1
+insult noun C1
+insult verb C1
+insurance noun B2
+intact adjective C1
+intake noun C1
+integral adjective C1
+integrate verb B2
+integrated adjective C1
+integration noun C1
+integrity noun C1
+intellectual adjective B2
+intellectual noun C1
+intelligence noun B1
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+intend verb B1
+intended adjective B2
+intense adjective B2
+intensify verb C1
+intensity noun C1
+intensive adjective C1
+intent noun C1
+intention noun B1
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+interactive adjective C1
+interest noun A1
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+interested adjective A1
+interesting adjective A1
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+interference noun C1
+interim adjective C1
+interior adjective C1
+interior noun C1
+intermediate adjective C1
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+international adjective A2
+internet noun A1
+interpret verb B2
+interpretation noun B2
+interrupt verb B2
+interval noun B2
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+intervention noun C1
+interview noun A1
+interview verb A1
+intimate adjective C1
+into preposition A1
+intriguing adjective C1
+introduce verb A1
+introduction noun A2
+invade verb B2
+invasion noun B2
+invent verb A2
+invention noun A2
+invest verb B1
+investigate verb B1
+investigation noun B2
+investigator noun C1
+investment noun B2
+investor noun B2
+invisible adjective C1
+invitation noun A2
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+invoke verb C1
+involve verb A2
+involved adjective B1
+involvement noun C1
+iron noun B1
+iron verb B1
+ironic adjective C1
+ironically adverb C1
+irony noun C1
+irrelevant adjective C1
+island noun A1
+isolate verb B2
+isolated adjective B2
+isolation noun C1
+issue noun B1
+issue verb B2
+IT noun B1
+it pronoun A1
+item noun A2
+its determiner  A1
+itself pronoun A2
+jacket noun A1
+jail noun B2
+jail verb B2
+jam noun A2
+January noun A1
+jazz noun A2
+jeans noun A1
+jet noun B2
+jewellery noun A2
+job noun A1
+join verb A1
+joint adjective B2
+joint noun B2
+joke noun A2
+joke verb A2
+journal noun B1
+journalism noun B2
+journalist noun A2
+journey noun A1
+joy noun B2
+judge noun B1
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+judgement noun B2
+judicial adjective C1
+juice noun A1
+July noun A1
+jump noun A2
+jump verb A2
+junction noun C1
+June noun A1
+junior adjective B2
+jurisdiction noun C1
+jury noun B2
+just adjective C1
+just adverb A1
+justice noun B2
+justification noun C1
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+keen adjective B1
+keep verb A1
+key adjective A1
+key noun A1
+key verb B1
+keyboard noun B1
+kick noun B1
+kick verb B1
+kid noun A2
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+kidney noun C1
+kill verb A2
+killing noun B1
+kilometre noun A1
+kind adjective B1
+kind noun A1
+king noun A2
+kingdom noun C1
+kiss noun B1
+kiss verb B1
+kit noun B2
+kitchen noun A1
+knee noun A2
+knife noun A2
+knock noun B1
+knock verb A2
+know verb A1
+knowledge noun A2
+lab noun A2
+label noun B1
+label verb B1
+laboratory noun B1
+labour noun B2
+lack noun B1
+lack verb B1
+lad noun C1
+ladder noun B2
+lady noun A2
+lake noun A2
+lamp noun A2
+land noun A1
+land verb A2
+landing noun B2
+landlord noun C1
+landmark noun C1
+landscape noun B2
+lane noun B2
+language noun A1
+lap noun C1
+laptop noun A2
+large adjective A1
+large-scale adjective C1
+largely adverb B2
+laser noun C1
+last adverb A2
+last determiner  A1
+last noun A2
+last verb A2
+late adjective A1
+late adverb A1
+lately adverb B2
+later adjective A2
+later adverb A1
+latest adjective B1
+latest noun B2
+latter adjective C1
+latter noun C1
+laugh noun A1
+laugh verb A1
+laughter noun A2
+launch noun B2
+launch verb B2
+law noun A2
+lawn noun C1
+lawsuit noun C1
+lawyer noun A2
+lay verb B1
+layer noun B1
+layout noun C1
+lazy adjective A2
+lead noun B1
+lead verb A2
+leader noun A2
+leadership noun B2
+leading adjective B1
+leaf noun B1
+leaflet noun B2
+league noun B2
+leak noun C1
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+lean verb B2
+leap noun C1
+leap verb C1
+learn verb A1
+learning noun A2
+least adverb A2
+least determiner  A2
+least pronoun A2
+leather noun B1
+leave noun B2
+leave verb A1
+lecture noun A2
+lecture verb A2
+left adjective A1
+left adverb A1
+left noun A1
+leg noun A1
+legacy noun C1
+legal adjective B1
+legend noun B2
+legendary adjective C1
+legislation noun C1
+legislative adjective C1
+legislature noun C1
+legitimate adjective C1
+leisure noun B1
+lemon noun A2
+lend verb A2
+length noun B1
+lengthy adjective C1
+lens noun B2
+lesbian adjective C1
+less adverb A2
+less determiner  A2
+less pronoun A2
+lesser adjective C1
+lesson noun A1
+let verb A1
+lethal adjective C1
+letter noun A1
+level adjective B1
+level noun A2
+level verb B2
+liable adjective C1
+liberal adjective C1
+liberal noun C1
+liberation noun C1
+liberty noun C1
+library noun A1
+licence noun B2
+license verb C1
+lie noun B1
+lie verb A1
+lie verb B1
+life noun A1
+lifelong adjective C1
+lifestyle noun A2
+lifetime noun B2
+lift noun A2
+lift verb A2
+light adjective A1
+light noun A1
+light verb A2
+lighting noun B2
+like noun B1
+like preposition A1
+like verb A1
+likelihood noun C1
+likely adjective A2
+likewise adverb B2
+limb noun C1
+limit noun B1
+limit verb B1
+limitation noun B2
+limited adjective B2
+line noun A1
+line verb B2
+line-up noun C1
+linear adjective C1
+linger verb C1
+link noun A2
+link verb A2
+lion noun A1
+lip noun B1
+liquid adjective B1
+liquid noun B1
+list noun A1
+list verb A1
+listen verb A1
+listener noun A2
+listing noun C1
+literacy noun C1
+literally adverb B2
+literary adjective B2
+literature noun B1
+litre noun B2
+litter noun B2
+little adjective A1
+little adverb A2
+little determiner  A1
+little pronoun A1
+live adjective B1
+live adverb B1
+live verb A1
+lively adjective B2
+liver noun C1
+living adjective B1
+living noun B1
+load noun B2
+load verb B2
+loan noun B2
+lobby noun C1
+lobby verb C1
+local adjective A1
+local noun B1
+locate verb B1
+located adjective B1
+location noun B1
+lock noun A2
+lock verb A2
+log noun C1
+log verb C1
+logic noun C1
+logical adjective B2
+logo noun B2
+lonely adjective B1
+long adjective A1
+long adverb A1
+long-standing adjective C1
+long-term adjective B2
+long-term adverb B2
+long-time adjective C1
+look noun A2
+look verb A1
+loom verb C1
+loop noun C1
+loose adjective B2
+lord noun B2
+lorry noun A2
+lose verb A1
+loss noun B1
+lost adjective A2
+lot adverb A1
+lot determiner  A1
+lot pronoun A1
+lottery noun B2
+loud adjective A2
+loud adverb A2
+loudly adverb A2
+love noun A1
+love verb A1
+lovely adjective A2
+low adjective A2
+low adverb A2
+low noun B2
+lower verb B2
+loyal adjective B2
+loyalty noun C1
+luck noun A2
+lucky adjective A2
+lunch noun A1
+lung noun B2
+luxury adjective B1
+luxury noun B1
+lyric noun B2
+machine noun A1
+machinery noun C1
+mad adjective B1
+magazine noun A1
+magic adjective B1
+magic noun B1
+magical adjective C1
+magistrate noun C1
+magnetic adjective C1
+magnificent adjective B2
+magnitude noun C1
+mail noun A2
+mail verb A2
+main adjective A1
+mainland noun C1
+mainly adverb B1
+mainstream adjective C1
+mainstream noun C1
+maintain verb B2
+maintenance noun C1
+major adjective A2
+majority noun B2
+make noun B2
+make verb A1
+make-up noun B2
+making noun B2
+male adjective A2
+male noun A2
+mall noun B1
+man noun A1
+manage verb A2
+management noun B1
+manager noun A2
+mandate noun C1
+mandatory adjective C1
+manifest verb C1
+manipulate verb C1
+manipulation noun C1
+manner noun A2
+manufacture verb B2
+manufacturing noun B2
+manuscript noun C1
+many determiner  A1
+many pronoun A1
+map noun A1
+map verb B2
+marathon noun B2
+March noun A1
+march noun C1
+march verb C1
+margin noun B2
+marginal adjective C1
+marine adjective C1
+mark noun A2
+mark verb A2
+marker noun B2
+market noun A1
+market verb B1
+marketing noun B1
+marketplace noun C1
+marriage noun B1
+married adjective A1
+marry verb A2
+martial adjective B2
+mask noun C1
+mass adjective B2
+mass noun B2
+massacre noun C1
+massive adjective B2
+master noun B2
+master verb B2
+match noun A1
+match verb A1
+matching adjective B2
+mate noun B2
+mate verb B2
+material adjective B2
+material noun A2
+mathematical adjective C1
+mathematics noun A2
+maths noun A2
+matter noun A2
+matter verb A2
+mature adjective C1
+mature verb C1
+maximize verb C1
+maximum adjective B2
+maximum noun B2
+May noun A1
+may modal verb A2
+maybe adverb A1
+mayor noun B2
+me pronoun A1
+meal noun A1
+mean verb A1
+meaning noun A1
+meaningful adjective C1
+means noun B2
+meantime noun C1
+meanwhile adverb B1
+measure noun B1
+measure verb B1
+measurement noun B2
+meat noun A1
+mechanic noun B2
+mechanical adjective B2
+mechanism noun B2
+medal noun B2
+media noun A2
+medical adjective A2
+medication noun B2
+medicine noun A2
+medieval adjective C1
+meditation noun C1
+medium adjective B1
+medium noun B2
+meet verb A1
+meeting noun A1
+melody noun C1
+melt verb B2
+member noun A1
+membership noun B2
+memo noun C1
+memoir noun C1
+memorable adjective B2
+memorial noun C1
+memory noun A2
+mental adjective B1
+mention noun B1
+mention verb A2
+mentor noun C1
+menu noun A1
+merchant noun C1
+mercy noun C1
+mere adjective C1
+merely adverb C1
+merge verb C1
+merger noun C1
+merit noun C1
+mess noun B1
+message noun A1
+metal noun A2
+metaphor noun B2
+method noun A2
+methodology noun C1
+metre noun A1
+middle adjective A2
+middle noun A2
+midnight noun A1
+midst noun C1
+might modal verb A2
+migration noun C1
+mild adjective B1
+mile noun A1
+militant adjective C1
+militant noun C1
+military adjective B2
+military noun B2
+militia noun C1
+milk noun A1
+mill noun C1
+million number A1
+mind noun A2
+mind verb A2
+mine noun B1
+mine pronoun A2
+miner noun B2
+mineral noun B2
+minimal adjective C1
+minimize verb C1
+minimum adjective B2
+minimum noun B2
+mining noun C1
+minister noun B2
+ministry noun C1
+minor adjective B2
+minority noun B2
+minute adjective C1
+minute noun A1
+miracle noun C1
+mirror noun A2
+miserable adjective B2
+misery noun C1
+misleading adjective C1
+miss verb A1
+missile noun C1
+missing adjective A2
+mission noun B2
+mistake noun A1
+mistake verb B2
+mix noun B1
+mix verb B1
+mixed adjective B2
+mixture noun B1
+mob noun C1
+mobile adjective A2
+mobile noun A2
+mobility noun C1
+mobilize verb C1
+mode noun B2
+model noun A1
+model verb B2
+moderate adjective C1
+modern adjective A1
+modest adjective B2
+modification noun C1
+modify verb B2
+moment noun A1
+momentum noun C1
+Monday noun A1
+money noun A1
+monitor noun B2
+monitor verb B2
+monk noun C1
+monkey noun A2
+monopoly noun C1
+monster noun B2
+month noun A1
+monthly adjective B2
+monument noun B2
+mood noun B1
+moon noun A2
+moral adjective B2
+moral noun B2
+morality noun C1
+more adverb A1
+more determiner  A1
+more pronoun A1
+moreover adverb B2
+morning noun A1
+mortgage noun B2
+mosque noun B2
+most adverb A1
+most determiner  A1
+most pronoun A1
+mostly adverb A2
+mother noun A1
+motion noun B2
+motivate verb B2
+motivation noun B2
+motive noun C1
+motor adjective B2
+motor noun B2
+motorcycle noun A2
+motorist noun C1
+mount verb B2
+mountain noun A1
+mouse noun A1
+mouth noun A1
+move noun B1
+move verb A1
+movement noun A2
+movie noun A1
+moving adjective B2
+much adverb A1
+much determiner  A1
+much pronoun A1
+mud noun B1
+multiple adjective B2
+multiply verb B2
+mum noun A1
+municipal adjective C1
+murder noun B1
+murder verb B1
+muscle noun B1
+museum noun A1
+music noun A1
+musical adjective A2
+musical noun B1
+musician noun A2
+must modal verb A1
+mutual adjective C1
+my determiner  A1
+myself pronoun A2
+mysterious adjective B2
+mystery noun B1
+myth noun B2
+nail noun B1
+naked adjective B2
+name noun A1
+name verb A1
+namely adverb C1
+narrative adjective B1
+narrative noun B1
+narrow adjective A2
+narrow verb B2
+nasty adjective B2
+nation noun B1
+national adjective A2
+national noun B2
+nationwide adjective C1
+native adjective B1
+native noun B1
+natural adjective A1
+naturally adverb B1
+nature noun A2
+naval adjective C1
+navigation noun B2
+near adjective A1
+near adverb A1
+near preposition A1
+nearby adjective B2
+nearby adverb B2
+nearly adverb A2
+neat adjective B2
+necessarily adverb B1
+necessary adjective A2
+necessity noun B2
+neck noun A2
+need noun A2
+need verb A1
+need modal verb B1
+needle noun B1
+negative adjective A1
+negative noun B2
+neglect noun C1
+neglect verb C1
+negotiate verb B2
+negotiation noun B2
+neighbour noun A1
+neighbourhood noun B1
+neighbouring adjective C1
+neither adverb B1
+neither determiner  A2
+neither pronoun A2
+nerve noun B2
+nervous adjective A2
+nest noun C1
+net adjective C1
+net noun B1
+network noun A2
+neutral adjective B2
+never adverb A1
+nevertheless adverb B2
+new adjective A1
+newly adverb B2
+news noun A1
+newsletter noun C1
+newspaper noun A1
+next adjective A1
+next adverb A1
+next noun B1
+next to preposition A1
+nice adjective A1
+niche noun C1
+night noun A1
+nightmare noun B2
+nine number A1
+nineteen number A1
+ninety number A1
+no determiner  A1
+no exclamation A1
+no one pronoun A1
+noble adjective C1
+nobody pronoun A1
+nod verb C1
+noise noun A2
+noisy adjective A2
+nominate verb C1
+nomination noun C1
+nominee noun C1
+non-profit adjective C1
+none pronoun A2
+nonetheless adverb C1
+nonsense noun C1
+noon noun C1
+nor adverb B1
+nor conjunction B1
+norm noun B2
+normal adjective A2
+normal noun B1
+normally adverb A2
+north adjective A1
+north adverb A1
+north noun A1
+northern adjective B1
+nose noun A1
+not adverb A1
+notable adjective C1
+notably adverb C1
+note noun A1
+note verb B1
+notebook noun B2
+nothing pronoun A1
+notice noun A2
+notice verb A2
+notify verb C1
+notion noun B2
+notorious adjective C1
+novel adjective C1
+novel noun A2
+novelist noun B2
+November noun A1
+now adverb A1
+now conjunction B1
+nowadays adverb B2
+nowhere adverb A2
+nuclear adjective B1
+number  noun A1
+number  verb A2
+numerous adjective B2
+nurse noun A1
+nursery noun C1
+nursing noun B2
+nut noun A2
+nutrition noun B2
+o'clock adverb A1
+obesity noun B2
+obey verb B2
+object noun A1
+object verb B2
+objection noun C1
+objective adjective B2
+objective noun B2
+obligation noun B2
+oblige verb C1
+observation noun B2
+observe verb B2
+observer noun B2
+obsess verb C1
+obsession noun C1
+obstacle noun B2
+obtain verb B2
+obvious adjective B1
+obviously adverb B1
+occasion noun B1
+occasional adjective C1
+occasionally adverb B2
+occupation noun B2
+occupy verb B2
+occur verb B1
+occurrence noun C1
+ocean noun A2
+October noun A1
+odd adjective B1
+odds noun C1
+of preposition A1
+off adverb A1
+off preposition A1
+offence noun B2
+offend verb B2
+offender noun B2
+offensive adjective B2
+offer noun A2
+offer verb A2
+offering noun C1
+office noun A1
+officer noun A2
+official adjective B1
+official noun B2
+offspring noun C1
+often adverb A1
+oh exclamation A1
+oil noun A2
+OK adjective A1
+OK adverb A1
+OK exclamation A1
+old adjective A1
+old-fashioned adjective B1
+on adverb A1
+on preposition A1
+once adverb A1
+once conjunction B1
+one determiner  A1
+one number A1
+one pronoun A1
+ongoing adjective B2
+onion noun A1
+online adjective A1
+online adverb A1
+only adjective A1
+only adverb A1
+onto preposition A2
+open adjective A1
+open verb A1
+opening noun B2
+openly adverb B2
+opera noun B2
+operate verb B2
+operation noun B1
+operational adjective C1
+operator noun B2
+opinion noun A1
+opponent noun B2
+opportunity noun A2
+oppose verb B2
+opposed adjective B2
+opposite adjective A1
+opposite adverb A1
+opposite noun A1
+opposite preposition A1
+opposition noun B2
+opt verb C1
+optical adjective C1
+optimism noun C1
+optimistic adjective B2
+option noun A2
+or conjunction A1
+oral adjective C1
+orange adjective A1
+orange noun A1
+orchestra noun B2
+order noun A1
+order verb A1
+ordinary adjective A2
+organ noun B2
+organic adjective B2
+organization noun A2
+organizational adjective C1
+organize verb A2
+organized adjective B1
+organizer noun B1
+orientation noun C1
+origin noun B2
+original adjective A2
+original noun B1
+originally adverb B1
+originate verb C1
+other adjective A1
+other pronoun A1
+otherwise adverb B2
+ought modal verb B1
+our determiner  A1
+ours pronoun B1
+ourselves pronoun A2
+out adverb A1
+out preposition A1
+outbreak noun C1
+outcome noun B2
+outdoor adjective B1
+outdoors adverb B1
+outer adjective B2
+outfit noun B2
+outing noun C1
+outlet noun C1
+outline noun B2
+outline verb B2
+outlook noun C1
+output noun B2
+outrage noun C1
+outrage verb C1
+outside adjective A2
+outside adverb A1
+outside noun A2
+outside preposition A2
+outsider noun C1
+outstanding adjective B2
+oven noun A2
+over adverb A1
+over preposition A1
+overall adjective B2
+overall adverb B2
+overcome verb B2
+overlook verb C1
+overly adverb C1
+overnight adverb B2
+overseas adjective B2
+overseas adverb B2
+oversee verb C1
+overturn verb C1
+overwhelm verb C1
+overwhelming adjective C1
+owe verb B2
+own adjective A1
+own pronoun A1
+own verb A2
+owner noun A2
+ownership noun B2
+oxygen noun B2
+pace noun B2
+pace verb B2
+pack noun B1
+pack verb A2
+package noun B1
+package verb B2
+packet noun B2
+pad noun C1
+page noun A1
+pain noun A2
+painful adjective B1
+paint noun A1
+paint verb A1
+painter noun A2
+painting noun A1
+pair noun A1
+palace noun A2
+pale adjective B1
+palm noun B2
+pan noun B1
+panel noun B2
+panic noun B2
+pants noun A2
+paper noun A1
+parade noun B2
+paragraph noun A1
+parallel adjective B2
+parallel noun B2
+parameter noun C1
+parent noun A1
+parental adjective C1
+parish noun C1
+park noun A1
+park verb A1
+parking noun A2
+parliament noun B2
+parliamentary adjective C1
+part noun A1
+part-time adjective B2
+partial adjective C1
+partially adverb C1
+participant noun B2
+participate verb B1
+participation noun B2
+particular adjective A2
+particularly adverb B1
+partly adverb B2
+partner noun A1
+partnership noun B2
+party noun A1
+pass noun B1
+pass verb A2
+passage noun B2
+passenger noun A2
+passing noun C1
+passion noun B1
+passionate adjective B2
+passive adjective C1
+passport noun A1
+password noun B2
+past adjective A1
+past adverb A2
+past noun A1
+past preposition A1
+pastor noun C1
+patch noun C1
+patent noun C1
+path noun B1
+pathway noun C1
+patience noun B2
+patient adjective B2
+patient noun A2
+patrol noun C1
+patrol verb C1
+patron noun C1
+pattern noun A2
+pause noun B2
+pause verb B2
+pay noun A2
+pay verb A1
+payment noun B1
+peace noun A2
+peaceful adjective B1
+peak noun C1
+peasant noun C1
+peculiar adjective C1
+peer noun B2
+pen noun A1
+penalty noun B2
+pencil noun A1
+penny noun A2
+pension noun B2
+people noun A1
+pepper noun A1
+per preposition A2
+per cent adjective A2
+per cent adverb A2
+per cent noun A2
+perceive verb B2
+percentage noun B1
+perception noun B2
+perfect adjective A1
+perfectly adverb B1
+perform verb A2
+performance noun B1
+perhaps adverb A2
+period noun A1
+permanent adjective B2
+permanently adverb B2
+permission noun A2
+permit noun B2
+permit verb B2
+persist verb C1
+persistent adjective C1
+person noun A1
+personal adjective A1
+personality noun A2
+personally adverb B1
+personnel noun C1
+perspective noun B2
+persuade verb B1
+pet noun A2
+petition noun C1
+petrol noun A2
+phase noun B2
+phenomenon noun B2
+philosopher noun C1
+philosophical adjective C1
+philosophy noun B2
+phone noun A1
+phone verb A1
+photo noun A1
+photograph noun A1
+photograph verb A2
+photographer noun B1
+photography noun B1
+phrase noun A1
+physical adjective A2
+physician noun C1
+physics noun A2
+piano noun A1
+pick noun B2
+pick verb A2
+picture noun A1
+picture verb B2
+piece noun A1
+pig noun A1
+pile noun B2
+pile verb B2
+pill noun B2
+pilot noun A2
+pin noun B1
+pin verb B1
+pink adjective A1
+pink noun A1
+pioneer noun C1
+pioneer verb C1
+pipe noun B1
+pipeline noun C1
+pirate noun C1
+pit noun C1
+pitch noun B2
+pity noun B2
+place noun A1
+place verb B1
+placement noun B2
+plain adjective B2
+plan noun A1
+plan verb A1
+plane noun A1
+planet noun A2
+planning noun B1
+plant noun A1
+plant verb A2
+plastic adjective A2
+plastic noun A2
+plate noun A2
+platform noun A2
+play noun A1
+play verb A1
+player noun A1
+plea noun C1
+plead verb C1
+pleasant adjective B1
+please exclamation A1
+please verb A2
+pleased adjective A2
+pleasure noun B1
+pledge noun C1
+pledge verb C1
+plenty pronoun B1
+plot noun B1
+plot verb B2
+plug noun C1
+plug verb C1
+plunge verb C1
+plus adjective B2
+plus conjunction B2
+plus noun B2
+plus preposition B1
+pocket noun A2
+poem noun B1
+poet noun B1
+poetry noun B1
+point noun A1
+point verb B1
+pointed adjective B2
+poison noun B1
+poison verb B1
+poisonous adjective B1
+pole noun C1
+police noun A1
+policeman noun A1
+policy noun B1
+polite adjective A2
+political adjective B1
+politician noun B1
+politics noun B1
+poll noun C1
+pollution noun A2
+pond noun C1
+pool noun A1
+poor adjective A1
+pop adjective A2
+pop noun A2
+pop verb C1
+popular adjective A1
+popularity noun B2
+population noun A2
+port noun B1
+portfolio noun C1
+portion noun B2
+portrait noun B1
+portray verb C1
+pose verb B2
+position noun A2
+position verb B2
+positive adjective A1
+positive noun B2
+possess verb B2
+possession noun A2
+possibility noun A2
+possible adjective A1
+possibly adverb B1
+post noun A1
+post verb A1
+post-war adjective C1
+poster noun A2
+postpone verb C1
+pot noun B1
+potato noun A1
+potential adjective B2
+potential noun B2
+potentially adverb B2
+pound noun A1
+pour verb B1
+poverty noun B1
+powder noun B1
+power noun A2
+power verb B2
+powerful adjective B1
+practical adjective B1
+practice noun A1
+practise verb A1
+practitioner noun C1
+praise noun B2
+praise verb B2
+pray verb B1
+prayer noun B1
+preach verb C1
+precede verb B2
+precedent noun C1
+precious adjective B2
+precise adjective B2
+precisely adverb B2
+precision noun C1
+predator noun C1
+predecessor noun C1
+predict verb A2
+predictable adjective B2
+prediction noun B1
+predominantly adverb C1
+prefer verb A1
+preference noun B2
+pregnancy noun C1
+pregnant adjective B2
+prejudice noun C1
+preliminary adjective C1
+premier adjective C1
+premise noun C1
+premium noun C1
+preparation noun B2
+prepare verb A1
+prepared adjective B1
+prescribe verb C1
+prescription noun C1
+presence noun B2
+present adjective A1
+present noun A1
+present verb A2
+presentation noun B1
+presently adverb C1
+preservation noun C1
+preserve verb B2
+preside verb C1
+presidency noun C1
+president noun A2
+presidential adjective C1
+press noun B1
+press verb B1
+pressure noun B1
+prestigious adjective C1
+presumably adverb C1
+presume verb C1
+pretend verb B1
+pretty adjective A1
+pretty adverb A1
+prevail verb C1
+prevalence noun C1
+prevent verb A2
+prevention noun C1
+previous adjective B1
+previously adverb B1
+prey noun C1
+price noun A1
+price verb B2
+pride noun B2
+priest noun B1
+primarily adverb B2
+primary adjective B1
+prime adjective B2
+prince noun B1
+princess noun B1
+principal adjective B2
+principal noun C1
+principle noun B2
+print noun B2
+print verb A2
+printer noun A2
+printing noun B1
+prior adjective B2
+priority noun B2
+prison noun A2
+prisoner noun B1
+privacy noun B2
+private adjective B1
+privatization noun C1
+privilege noun C1
+prize noun A2
+probability noun B2
+probable adjective B2
+probably adverb A1
+probe noun C1
+probe verb C1
+problem noun A1
+problematic adjective C1
+procedure noun B2
+proceed verb B2
+proceeding noun C1
+proceeds noun C1
+process noun A2
+process verb B2
+processing noun C1
+processor noun C1
+proclaim verb C1
+produce noun B2
+produce verb A2
+producer noun B1
+product noun A1
+production noun B1
+productive adjective C1
+productivity noun C1
+profession noun B1
+professional adjective A2
+professional noun B2
+professor noun A2
+profile noun A2
+profit noun B1
+profitable adjective C1
+profound adjective C1
+program noun A2
+program verb B1
+programme noun A1
+programming noun B2
+progress noun A2
+progress verb B2
+progressive adjective B2
+prohibit verb B2
+project noun A1
+project verb B2
+projection noun C1
+prominent adjective C1
+promise noun A2
+promise verb A2
+promising adjective B2
+promote verb B1
+promotion noun B2
+prompt verb B2
+pronoun ce verb A2
+pronoun ced adjective C1
+proof noun B2
+propaganda noun C1
+proper adjective B1
+properly adverb B1
+property noun B1
+proportion noun B2
+proposal noun B2
+propose verb B2
+proposition noun C1
+prosecute verb C1
+prosecution noun C1
+prosecutor noun C1
+prospect noun B2
+prospective adjective C1
+prosperity noun C1
+protect verb A2
+protection noun B2
+protective adjective C1
+protein noun B2
+protest noun B1
+protest verb B1
+protester noun B2
+protocol noun C1
+proud adjective B1
+prove verb B1
+provide verb A2
+province noun C1
+provincial adjective C1
+provision noun C1
+provoke verb C1
+psychiatric adjective C1
+psychological adjective B2
+psychologist noun B2
+psychology noun B2
+pub noun A2
+public adjective A2
+public noun A2
+publication noun B2
+publicity noun B2
+publish verb A2
+publishing noun B2
+pull noun B1
+pull verb A2
+pulse noun C1
+pump noun C1
+pump verb C1
+punch noun C1
+punch verb C1
+punish verb B1
+punishment noun B1
+punk noun B2
+pupil noun B2
+purchase noun B2
+purchase verb B2
+pure adjective B2
+purely adverb B2
+purple adjective A1
+purple noun A1
+purpose noun A2
+pursue verb B2
+pursuit noun B2
+push noun B1
+push verb A2
+put verb A1
+puzzle noun B2
+qualification noun B1
+qualified adjective B1
+qualify verb B1
+quality noun A2
+quantity noun A2
+quarter noun A1
+queen noun A2
+query noun C1
+quest noun C1
+question noun A1
+question verb A2
+questionnaire noun B2
+queue noun B1
+queue verb B1
+quick adjective A1
+quickly adverb A1
+quiet adjective A1
+quietly adverb A2
+quit verb B1
+quite adverb A1
+quota noun C1
+quotation noun B1
+quote noun B1
+quote verb B1
+race noun A2
+race verb A2
+racial adjective B2
+racing noun B1
+racism noun B2
+racist adjective B2
+racist noun B2
+radar noun C1
+radiation noun B2
+radical adjective C1
+radio noun A1
+rage noun C1
+raid noun C1
+raid verb C1
+rail noun B2
+railway noun A2
+rain noun A1
+rain verb A1
+raise verb A2
+rally noun C1
+rally verb C1
+random adjective B2
+range noun B1
+range verb B2
+rank noun B2
+rank verb B2
+ranking noun C1
+rape noun C1
+rape verb C1
+rapid adjective B2
+rapidly adverb B2
+rare adjective B1
+rarely adverb B1
+rat noun B2
+rate noun A2
+rate verb B2
+rather adverb A2
+rating noun B2
+ratio noun C1
+rational adjective C1
+raw adjective B2
+ray noun C1
+reach noun B2
+reach verb A2
+react verb A2
+reaction noun B1
+read verb A1
+reader noun A1
+readily adverb C1
+reading noun A1
+ready adjective A1
+real adjective A1
+realistic adjective B2
+reality noun B1
+realization noun C1
+realize verb A2
+really adverb A1
+realm noun C1
+rear adjective C1
+rear noun C1
+reason noun A1
+reasonable adjective B2
+reasonably adverb B2
+reasoning noun C1
+reassure verb C1
+rebel noun C1
+rebellion noun C1
+rebuild verb B2
+recall verb B2
+receipt noun B1
+receive verb A2
+receiver noun B2
+recent adjective A2
+recently adverb A2
+reception noun A2
+recession noun B2
+recipe noun A2
+recipient noun C1
+reckon verb B2
+recognition noun B2
+recognize verb A2
+recommend verb A2
+recommendation noun B1
+reconstruction noun C1
+record noun A2
+record verb A2
+recording noun A2
+recount verb C1
+recover verb B2
+recovery noun B2
+recruit noun B2
+recruit verb B2
+recruitment noun B2
+recycle verb A2
+red adjective A1
+red noun A1
+reduce verb A2
+reduction noun B2
+refer verb A2
+referee noun B2
+reference noun B1
+referendum noun C1
+reflect verb B1
+reflection noun C1
+reform noun C1
+reform verb C1
+refuge noun C1
+refugee noun B2
+refusal noun C1
+refuse verb A2
+regain verb C1
+regard noun B2
+regard verb B2
+regardless adverb C1
+regime noun C1
+region noun A2
+regional adjective B2
+register noun B2
+register verb B2
+registration noun B2
+regret noun B2
+regret verb B2
+regular adjective A2
+regularly adverb B1
+regulate verb B2
+regulation noun B2
+regulator noun C1
+regulatory adjective C1
+rehabilitation noun C1
+reign noun C1
+reign verb C1
+reinforce verb B2
+reject verb B1
+rejection noun C1
+relate verb B1
+related adjective B1
+relation noun B1
+relationship noun A2
+relative adjective B1
+relative noun B1
+relatively adverb B2
+relax verb A1
+relaxed adjective B1
+relaxing adjective B1
+release noun B1
+release verb B1
+relevance noun C1
+relevant adjective B2
+reliability noun C1
+reliable adjective B1
+relief noun B2
+relieve verb B2
+relieved adjective B2
+religion noun B1
+religious adjective B1
+reluctant adjective C1
+rely verb B2
+remain verb B1
+remainder noun C1
+remains noun C1
+remark noun B2
+remark verb B2
+remarkable adjective B2
+remarkably adverb B2
+remedy noun C1
+remember verb A1
+remind verb B1
+reminder noun C1
+remote adjective B1
+removal noun C1
+remove verb A2
+render verb C1
+renew verb C1
+renowned adjective C1
+rent noun B1
+rent verb B1
+rental noun C1
+repair noun B1
+repair verb A2
+repeat noun B1
+repeat verb A1
+repeated adjective B1
+replace verb A2
+replacement noun C1
+reply noun A2
+reply verb A2
+report noun A1
+report verb A2
+reportedly adverb C1
+reporter noun A2
+reporting noun B2
+represent verb B1
+representation noun C1
+representative adjective B2
+representative noun B2
+reproduce verb C1
+reproduction noun C1
+republic noun C1
+reputation noun B2
+request noun A2
+request verb B1
+require verb B1
+requirement noun B2
+rescue noun B2
+rescue verb B2
+research noun A2
+research verb A2
+researcher noun A2
+resemble verb C1
+reservation noun B1
+reserve noun B2
+reserve verb B2
+reside verb C1
+residence noun C1
+resident adjective B2
+resident noun B2
+residential adjective C1
+residue noun C1
+resign verb B2
+resignation noun C1
+resist verb B2
+resistance noun C1
+resolution noun B2
+resolve verb B2
+resort noun B2
+resource noun B1
+respect noun B1
+respect verb B1
+respective adjective C1
+respectively adverb C1
+respond verb A2
+response noun A2
+responsibility noun B1
+responsible adjective B1
+rest noun A2
+rest verb A2
+restaurant noun A1
+restoration noun C1
+restore verb B2
+restraint noun C1
+restrict verb B2
+restriction noun B2
+result noun A1
+result verb B1
+resume verb C1
+retail noun B2
+retain verb B2
+retire verb B1
+retired adjective B1
+retirement noun B2
+retreat noun C1
+retreat verb C1
+retrieve verb C1
+return noun A1
+return verb A1
+reveal verb B2
+revelation noun C1
+revenge noun C1
+revenue noun B2
+reverse adjective C1
+reverse noun C1
+reverse verb C1
+review noun A2
+review verb A2
+revise verb B1
+revision noun B2
+revival noun C1
+revive verb C1
+revolution noun B2
+revolutionary adjective C1
+reward noun B2
+reward verb B2
+rhetoric noun C1
+rhythm noun B2
+rice noun A1
+rich adjective A1
+rid verb B2
+ride noun A2
+ride verb A1
+ridiculous adjective B2
+rifle noun C1
+right adjective A1
+right adverb A1
+right noun A1
+ring noun A2
+ring verb A2
+riot noun C1
+rip verb C1
+rise noun B1
+rise verb A2
+risk noun B1
+risk verb B1
+risky adjective B2
+ritual noun C1
+rival adjective B2
+rival noun B2
+river noun A1
+road noun A1
+rob verb B2
+robbery noun B2
+robot noun B1
+robust adjective C1
+rock noun A2
+rock verb C1
+rocket noun B2
+rod noun C1
+role noun A2
+roll noun B1
+roll verb B1
+romance noun B2
+romantic adjective B1
+roof noun A2
+room noun A1
+root noun B2
+rope noun B1
+rose noun B2
+rotate verb C1
+rotation noun C1
+rough adjective B1
+roughly adverb B2
+round adjective A2
+round adverb A2
+round noun B2
+round preposition A2
+route noun A2
+routine adjective B2
+routine noun A1
+row noun B1
+royal adjective B1
+rub verb B2
+rubber adjective B2
+rubber noun B2
+rubbish noun A2
+rude adjective A2
+rugby noun B1
+ruin noun B2
+ruin verb B2
+rule noun A1
+rule verb B1
+ruling noun C1
+rumour noun C1
+run noun A2
+run verb A1
+runner noun A2
+running noun A2
+rural adjective B2
+rush noun B2
+rush verb B2
+sack verb C1
+sacred adjective C1
+sacrifice noun C1
+sacrifice verb C1
+sad adjective A1
+sadly adverb A2
+safe adjective A2
+safety noun B1
+sail noun B1
+sail verb A2
+sailing noun A2
+sailor noun B1
+saint noun C1
+sake noun C1
+salad noun A1
+salary noun A2
+sale noun A2
+salt noun A1
+same adjective A1
+same adverb A1
+same pronoun A1
+sample noun B1
+sample verb B2
+sanction noun C1
+sand noun B1
+sandwich noun A1
+satellite noun B2
+satisfaction noun B2
+satisfied adjective B2
+satisfy verb B2
+Saturday noun A1
+sauce noun A2
+save verb A2
+saving noun B2
+say noun C1
+say verb A1
+scale noun B2
+scan verb B1
+scandal noun B2
+scare noun B2
+scare verb B2
+scared adjective A2
+scary adjective A2
+scattered adjective C1
+scenario noun B2
+scene noun A2
+sceptical adjective C1
+schedule noun A2
+schedule verb B2
+scheme noun B2
+scholar noun B2
+scholarship noun B2
+school noun A1
+science noun A1
+scientific adjective B1
+scientist noun A1
+scope noun C1
+score noun A2
+score verb A2
+scratch noun B2
+scratch verb B2
+scream noun B2
+scream verb B2
+screen noun A2
+screen verb B2
+screening noun B2
+screw noun C1
+screw verb C1
+script noun B1
+scrutiny noun C1
+sculpture noun B1
+sea noun A1
+seal noun C1
+seal verb C1
+search noun A2
+search verb A2
+season noun A2
+seat noun A2
+seat verb B2
+second adverb A2
+second determiner  A1
+second noun A1
+second ordinalnumber A1
+secondary adjective B1
+secondly adverb A2
+secret adjective A2
+secret noun A2
+secretary noun A2
+section noun A1
+sector noun B2
+secular adjective C1
+secure adjective B2
+secure verb B2
+security noun B1
+see verb A1
+seed noun B1
+seek verb B2
+seeker noun B2
+seem linking verb A2
+seemingly adverb C1
+segment noun C1
+seize verb C1
+seldom adverb C1
+select verb B2
+selection noun B2
+selective adjective C1
+self noun B2
+sell verb A1
+seminar noun B2
+senator noun C1
+send verb A1
+senior adjective B2
+sensation noun C1
+sense noun A2
+sense verb B2
+sensible adjective B1
+sensitive adjective B2
+sensitivity noun C1
+sentence noun A1
+sentence verb B2
+sentiment noun C1
+separate adjective A2
+separate verb B1
+separation noun C1
+September noun A1
+sequence noun B2
+serial adjective C1
+series noun A2
+serious adjective A2
+seriously adverb B1
+servant noun B1
+serve verb A2
+service noun A2
+session noun B2
+set noun B1
+set verb B1
+set-up noun C1
+setting noun B1
+settle verb B2
+settlement noun C1
+settler noun B2
+seven number A1
+seventeen number A1
+seventy number A1
+several determiner  A2
+several pronoun A2
+severe adjective B2
+severely adverb B2
+sex noun B1
+sexual adjective B1
+sexuality noun C1
+sexy adjective B2
+shade noun B2
+shadow noun B2
+shake noun B1
+shake verb A2
+shall modal verb A2
+shallow adjective B2
+shame noun B2
+shape noun A2
+shape verb B2
+shaped adjective B2
+share noun B1
+share verb A1
+shareholder noun C1
+sharp adjective B1
+shatter verb C1
+she pronoun A1
+shed verb C1
+sheep noun A1
+sheer adjective C1
+sheet noun A2
+shelf noun B1
+shell noun B1
+shelter noun B2
+shelter verb B2
+shift noun B1
+shift verb B2
+shine verb B1
+shiny adjective B1
+ship noun A2
+ship verb B2
+shipping noun C1
+shirt noun A1
+shock noun B2
+shock verb B2
+shocked adjective B2
+shocking adjective B2
+shoe noun A1
+shoot noun C1
+shoot verb B1
+shooting noun B2
+shop noun A1
+shop verb A1
+shopping noun A1
+shore noun B2
+short adjective A1
+short-term adjective B2
+shortage noun B2
+shortly adverb B2
+shot noun B2
+should modal verb A1
+shoulder noun A2
+shout noun A2
+shout verb A2
+show noun A1
+show verb A1
+shower noun A1
+shrink verb C1
+shrug verb C1
+shut adjective A2
+shut verb A2
+shy adjective B1
+sibling noun B2
+sick adjective A1
+side noun A2
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+sigh verb C1
+sight noun B1
+sign noun A2
+sign verb A2
+signal noun B1
+signal verb B1
+signature noun B2
+significance noun B2
+significant adjective B2
+significantly adverb B2
+silence noun B2
+silent adjective B1
+silk noun B2
+silly adjective B1
+silver adjective A2
+silver noun A2
+similar adjective A1
+similarity noun B1
+similarly adverb B1
+simple adjective A2
+simply adverb B1
+simulate verb C1
+simulation noun C1
+simultaneously adverb C1
+sin noun C1
+since adverb B1
+since conjunction A2
+since preposition A2
+sincere adjective B2
+sing verb A1
+singer noun A1
+singing noun A2
+single adjective A2
+single noun A2
+sink verb B1
+sir noun A2
+sister noun A1
+sit verb A1
+site noun A2
+situated adjective C1
+situation noun A1
+six number A1
+sixteen number A1
+sixty number A1
+size noun A2
+sketch noun C1
+ski adjective A2
+ski noun A2
+ski verb A2
+skiing noun A2
+skill noun A1
+skilled adjective B2
+skin noun A2
+skip verb C1
+skirt noun A1
+skull noun B2
+sky noun A2
+slam verb C1
+slap verb C1
+slash verb C1
+slave noun B2
+slavery noun C1
+sleep noun A2
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+slice noun B1
+slice verb B1
+slide noun B2
+slide verb B2
+slight adjective B2
+slightly adverb B1
+slip verb B2
+slogan noun B2
+slope noun B2
+slope verb B2
+slot noun C1
+slow adjective A1
+slow verb B1
+slowly adverb A2
+small adjective A1
+smart adjective B1
+smartphone noun A2
+smash verb C1
+smell noun A2
+smell verb A2
+smile noun A2
+smile verb A2
+smoke noun A2
+smoke verb A2
+smoking noun A2
+smooth adjective B1
+snake noun A1
+snap verb C1
+snow noun A1
+snow verb A1
+so adverb A1
+so conjunction A1
+so-called adjective B2
+soak verb C1
+soap noun A2
+soar verb C1
+soccer noun A2
+social adjective A2
+socialist adjective C1
+society noun A2
+sock noun A2
+soft adjective A2
+software noun B1
+soil noun B1
+solar adjective B2
+soldier noun A2
+sole adjective C1
+solely adverb C1
+solicitor noun C1
+solid adjective B1
+solid noun B1
+solidarity noun C1
+solo adjective C1
+solo noun C1
+solution noun A2
+solve verb A2
+some determiner  A1
+some pronoun A1
+somebody pronoun A1
+somehow adverb B2
+someone pronoun A1
+something pronoun A1
+sometime adverb B2
+sometimes adverb A1
+somewhat adverb B2
+somewhere adverb A2
+somewhere pronoun A2
+son noun A1
+song noun A1
+soon adverb A1
+sophisticated adjective B2
+sorry adjective A1
+sorry exclamation A1
+sort noun A2
+sort verb B1
+soul noun B2
+sound adjective C1
+sound noun A1
+sound verb A1
+soup noun A1
+source noun A2
+south adjective A1
+south adverb A1
+south noun A1
+southern adjective B1
+sovereignty noun C1
+space noun A1
+spam noun C1
+span noun C1
+span verb C1
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+spare verb C1
+spark verb C1
+speak verb A1
+speaker noun A2
+special adjective A1
+specialist adjective B2
+specialist noun B2
+specialize verb B2
+specialized adjective C1
+species noun B2
+specific adjective A2
+specifically adverb B1
+specification noun C1
+specify verb B2
+specimen noun C1
+spectacle noun C1
+spectacular adjective B2
+spectator noun B2
+spectrum noun C1
+speculate verb B2
+speculation noun B2
+speech noun A2
+speed noun A2
+speed verb B2
+spell noun C1
+spell verb A1
+spelling noun A1
+spend verb A1
+spending noun B1
+sphere noun C1
+spice noun B2
+spicy adjective B1
+spider noun A2
+spill verb B2
+spin noun C1
+spin verb C1
+spine noun C1
+spirit noun B1
+spiritual adjective B2
+spite noun B2
+split noun B2
+split verb B2
+spoil verb B2
+spoken adjective B1
+spokesman noun B2
+spokesperson noun B2
+spokeswoman noun B2
+sponsor noun B2
+sponsor verb B2
+sponsorship noun B2
+spoon noun A2
+sport noun A1
+sporting adjective B2
+spot noun B1
+spot verb B2
+spotlight noun C1
+spouse noun C1
+spread noun B2
+spread verb B1
+spring noun A1
+spring verb B2
+spy noun C1
+spy verb C1
+squad noun C1
+square adjective A2
+square noun A2
+squeeze verb C1
+stab verb C1
+stability noun C1
+stabilize verb C1
+stable adjective B2
+stadium noun B1
+staff noun B1
+stage noun A2
+stage verb B2
+stair noun A2
+stake noun C1
+stall noun B2
+stamp noun A2
+stance noun B2
+stand noun B2
+stand verb A1
+standard adjective B1
+standard noun B1
+standing adjective C1
+star noun A1
+star verb A2
+stare verb B2
+stark adjective C1
+start noun A2
+start verb A1
+starve verb B2
+state adjective B1
+state noun A2
+state verb B1
+statement noun A1
+station noun A1
+statistic noun B1
+statistical adjective C1
+statue noun B1
+status noun B2
+stay noun A2
+stay verb A1
+steadily adverb B2
+steady adjective B2
+steal verb A2
+steam noun B2
+steel noun B2
+steep adjective B2
+steer verb C1
+stem noun C1
+stem verb C1
+step noun A2
+step verb B2
+stereotype noun C1
+stick noun B1
+stick verb B1
+sticky adjective B2
+stiff adjective B2
+still adjective B1
+still adverb A1
+stimulate verb B2
+stimulus noun C1
+stir verb C1
+stock noun B2
+stomach noun A2
+stone noun A2
+stop noun A1
+stop verb A1
+storage noun C1
+store noun A2
+store verb B1
+storm noun A2
+story noun A1
+straight adjective A2
+straight adverb A2
+straightforward adjective C1
+strain noun C1
+strand noun C1
+strange adjective A2
+stranger noun B1
+strategic adjective C1
+strategy noun A2
+stream noun B2
+street noun A1
+strength noun B1
+strengthen verb B2
+stress noun A2
+stress verb A2
+stretch noun B2
+stretch verb B2
+strict adjective B2
+strictly adverb B2
+strike noun B2
+strike verb B2
+striking adjective C1
+string noun B1
+strip noun C1
+strip verb C1
+strive verb C1
+stroke noun B2
+strong adjective A1
+strongly adverb B1
+structural adjective C1
+structure noun A2
+structure verb B2
+struggle noun B2
+struggle verb B2
+student noun A1
+studio noun B1
+study noun A1
+study verb A1
+stuff noun B1
+stuff verb B2
+stumble verb C1
+stun verb C1
+stunning adjective B2
+stupid adjective A2
+style noun A1
+subject adjective B2
+subject noun A1
+submission noun C1
+submit verb B2
+subscriber noun C1
+subscription noun C1
+subsequent adjective B2
+subsequently adverb B2
+subsidy noun C1
+substance noun B1
+substantial adjective C1
+substantially adverb C1
+substitute noun C1
+substitute verb C1
+substitution noun C1
+subtle adjective C1
+suburb noun B2
+suburban adjective C1
+succeed verb A2
+success noun A1
+successful adjective A2
+successfully adverb B1
+succession noun C1
+successive adjective C1
+successor noun C1
+such determiner  A2
+such pronoun A2
+suck verb C1
+sudden adjective B1
+suddenly adverb A2
+sue verb C1
+suffer verb B1
+suffering noun B2
+sufficient adjective B2
+sufficiently adverb B2
+sugar noun A1
+suggest verb A2
+suggestion noun A2
+suicide noun C1
+suit noun A2
+suit verb B1
+suitable adjective B1
+suite noun C1
+sum noun B2
+sum verb B2
+summarize verb B1
+summary noun B1
+summer noun A1
+summit noun C1
+sun noun A1
+Sunday noun A1
+super adjective B2
+superb adjective C1
+superior adjective C1
+supermarket noun A1
+supervise verb C1
+supervision noun C1
+supervisor noun C1
+supplement noun C1
+supplement verb C1
+supply noun B1
+supply verb B1
+support noun A2
+support verb A2
+supporter noun B1
+supportive adjective C1
+suppose verb A2
+supposedly adverb C1
+suppress verb C1
+supreme adjective C1
+sure adjective A1
+sure adverb A2
+surely adverb B1
+surface noun B1
+surge noun C1
+surge verb C1
+surgeon noun B2
+surgery noun B2
+surgical adjective C1
+surplus noun C1
+surprise noun A2
+surprise verb A2
+surprised adjective A2
+surprising adjective A2
+surrender verb C1
+surround verb B2
+surrounding adjective B2
+surveillance noun C1
+survey noun A2
+survey verb B2
+survival noun B2
+survive verb B1
+survivor noun B2
+suspect noun B2
+suspect verb B2
+suspend verb B2
+suspension noun C1
+suspicion noun C1
+suspicious adjective C1
+sustain verb C1
+sustainable adjective B2
+swallow verb B2
+swear verb B2
+sweater noun A1
+sweep verb B2
+sweet adjective A2
+sweet noun A2
+swim noun B1
+swim verb A1
+swimming noun A1
+swing noun C1
+swing verb C1
+switch noun B2
+switch verb B1
+sword noun C1
+symbol noun A2
+symbolic adjective C1
+sympathetic adjective B2
+sympathy noun B2
+symptom noun B1
+syndrome noun C1
+synthesis noun C1
+system noun A2
+systematic adjective C1
+T-shirt noun A1
+table noun A1
+tablet noun A2
+tackle noun C1
+tackle verb B2
+tactic noun C1
+tactical adjective C1
+tag noun B2
+tag verb B2
+tail noun B1
+take verb A1
+tale noun B2
+talent noun B1
+talented adjective B1
+talk noun A2
+talk verb A1
+tall adjective A1
+tank noun B2
+tap noun B2
+tap verb B2
+tape noun B1
+target noun A2
+target verb B2
+task noun A2
+taste noun A2
+taste verb A2
+tax noun B1
+tax verb B1
+taxi noun A1
+taxpayer noun C1
+tea noun A1
+teach verb A1
+teacher noun A1
+teaching noun A2
+team noun A1
+tear noun B2
+tear verb B2
+technical adjective B1
+technique noun B1
+technological adjective B2
+technology noun A2
+teenage adjective A2
+teenager noun A1
+teens noun B2
+telephone noun A1
+telephone verb A1
+television noun A1
+tell verb A1
+temperature noun A2
+temple noun B2
+temporarily adverb B2
+temporary adjective B2
+tempt verb C1
+ten number A1
+tenant noun C1
+tend verb B1
+tendency noun B2
+tender adjective C1
+tennis noun A1
+tension noun B2
+tent noun B1
+tenure noun C1
+term noun A2
+term verb B2
+terminal adjective C1
+terminal noun B2
+terminate verb C1
+terms noun B2
+terrain noun C1
+terrible adjective A1
+terribly adverb B2
+terrific adjective C1
+terrify verb B2
+territory noun B2
+terror noun B2
+terrorism noun B2
+terrorist noun B2
+test noun A1
+test verb A1
+testify verb C1
+testimony noun C1
+testing noun B2
+text noun A1
+text verb A2
+textbook noun B2
+texture noun C1
+than conjunction A1
+than preposition A1
+thank verb A1
+thankfully adverb C1
+thanks exclamation A1
+thanks noun A1
+that adverb B1
+that conjunction A1
+that determiner  A1
+that pronoun A1
+the definite articleA1
+theatre noun A1
+theatrical adjective C1
+theft noun B2
+their determiner  A1
+theirs pronoun B1
+them pronoun A1
+theme noun B1
+themselves pronoun A2
+then adverb A1
+theology noun C1
+theoretical adjective C1
+theory noun B1
+therapist noun B2
+therapy noun B2
+there adverb A1
+thereafter adverb C1
+thereby adverb C1
+therefore adverb B1
+thesis noun B2
+they pronoun A1
+thick adjective A2
+thief noun A2
+thin adjective A2
+thing noun A1
+think verb A1
+thinking noun A2
+third noun A2
+third ordinalnumber A1
+thirsty adjective A1
+thirteen number A1
+thirty number A1
+this adverb B1
+this determiner  A1
+this pronoun A1
+thorough adjective B2
+thoroughly adverb B2
+though adverb B1
+though conjunction B1
+thought noun A2
+thought-provoking adjective C1
+thoughtful adjective C1
+thousand number A1
+thread noun C1
+threat noun B2
+threaten verb B2
+three number A1
+threshold noun C1
+thrilled adjective C1
+thrive verb C1
+throat noun B1
+through adverb A1
+through preposition A1
+throughout adverb B1
+throughout preposition B1
+throw verb A2
+thumb noun B2
+Thursday noun A1
+thus adverb B2
+ticket noun A1
+tide noun C1
+tidy adjective A2
+tidy verb A2
+tie noun A2
+tie verb A2
+tight adjective B1
+tighten verb C1
+till conjunction B1
+till preposition B1
+timber noun C1
+time noun A1
+time verb B2
+timely adjective C1
+timing noun B2
+tin noun B1
+tiny adjective B1
+tip noun A2
+tip verb B1
+tired adjective A1
+tissue noun B2
+title noun A1
+title verb B2
+to infinitive markerA1
+to preposition A1
+tobacco noun C1
+today adverb A1
+today noun A1
+toe noun B1
+together adverb A1
+toilet noun A1
+tolerance noun C1
+tolerate verb C1
+toll noun C1
+tomato noun A1
+tomorrow adverb A1
+tomorrow noun A1
+ton noun B2
+tone noun B2
+tongue noun B1
+tonight adverb A1
+tonight noun A1
+tonne noun B2
+too adverb A1
+tool noun A2
+tooth noun A1
+top adjective A2
+top noun A2
+top verb C1
+topic noun A1
+torture noun C1
+torture verb C1
+toss verb C1
+total adjective B1
+total noun B1
+total verb C1
+totally adverb B1
+touch noun B1
+touch verb A2
+tough adjective B2
+tour noun A2
+tour verb B1
+tourism noun A2
+tourist noun A1
+tournament noun B2
+towards preposition A2
+towel noun A2
+tower noun A2
+town noun A1
+toxic adjective C1
+toy adjective A2
+toy noun A2
+trace noun C1
+trace verb B2
+track noun A2
+track verb B2
+trade noun B1
+trade verb B1
+trademark noun C1
+trading noun B2
+tradition noun A2
+traditional adjective A2
+traffic noun A1
+tragedy noun B2
+tragic adjective B2
+trail noun C1
+trail verb C1
+trailer noun C1
+train noun A1
+train verb A2
+trainer noun A2
+training noun A2
+trait noun B2
+transaction noun C1
+transcript noun C1
+transfer noun B2
+transfer verb B2
+transform verb B2
+transformation noun C1
+transit noun C1
+transition noun B2
+translate verb B1
+translation noun B1
+transmission noun C1
+transmit verb B2
+transparency noun C1
+transparent adjective C1
+transport noun A2
+transport verb B1
+transportation noun B2
+trap noun B2
+trap verb B2
+trauma noun C1
+travel noun A1
+travel verb A1
+traveller noun A2
+treasure noun B2
+treat verb B1
+treatment noun B1
+treaty noun C1
+tree noun A1
+tremendous adjective C1
+trend noun B1
+trial noun B2
+tribal adjective C1
+tribe noun B2
+tribunal noun C1
+tribute noun C1
+trick noun B1
+trick verb B1
+trigger noun C1
+trigger verb B2
+trillion number B2
+trio noun C1
+trip noun A1
+trip verb B2
+triumph noun C1
+troop noun B2
+trophy noun C1
+tropical adjective B2
+trouble noun A2
+trouble verb B2
+troubled adjective C1
+trousers noun A1
+truck noun A2
+true adjective A1
+truly adverb B2
+trust noun B2
+trust verb B2
+trustee noun C1
+truth noun B1
+try noun B2
+try verb A1
+tsunami noun B2
+tube noun B1
+Tuesday noun A1
+tuition noun C1
+tune noun B2
+tunnel noun B2
+turn noun A1
+turn verb A1
+turnout noun C1
+turnover noun C1
+TV noun A1
+twelve number A1
+twenty number A1
+twice adverb A1
+twin adjective A2
+twin noun A2
+twist noun C1
+twist verb C1
+two number A1
+type noun A1
+type verb B1
+typical adjective A2
+typically adverb B1
+tyre noun B1
+ugly adjective B1
+ultimate adjective B2
+ultimately adverb B2
+umbrella noun A1
+unable adjective B1
+unacceptable adjective B2
+uncertainty noun B2
+uncle noun A1
+uncomfortable adjective B1
+unconscious adjective B2
+under adverb A1
+under preposition A1
+undergo verb B2
+undergraduate noun C1
+underground adjective A2
+underground adverb A2
+underlying adjective C1
+undermine verb C1
+understand verb A1
+understanding noun A2
+undertake verb B2
+underwear noun B1
+undoubtedly adverb C1
+unemployed adjective B1
+unemployment noun B1
+unexpected adjective B2
+unfair adjective B1
+unfold verb B2
+unfortunate adjective B2
+unfortunately adverb A2
+unhappy adjective A2
+uniform noun A2
+unify verb C1
+union noun B1
+unique adjective B2
+unit noun A2
+unite verb B2
+united adjective A2
+unity noun B2
+universal adjective B2
+universe noun B2
+university noun A1
+unknown adjective B2
+unless conjunction B1
+unlike preposition B1
+unlikely adjective B1
+unnecessary adjective B1
+unpleasant adjective B1
+unprecedented adjective C1
+until conjunction A1
+until preposition A1
+unusual adjective A2
+unveil verb C1
+up adverb A1
+up preposition A1
+upcoming adjective C1
+update noun B1
+update verb B1
+upgrade noun C1
+upgrade verb C1
+uphold verb C1
+upon preposition B1
+upper adjective B2
+upset adjective B1
+upset verb B1
+upstairs adjective A2
+upstairs adverb A1
+upwards adverb B2
+urban adjective B2
+urge verb B2
+urgent adjective B2
+us pronoun A1
+usage noun B2
+use noun A2
+use verb A1
+used adjective B1
+used to modal verb A2
+useful adjective A1
+useless adjective B2
+user noun A2
+usual adjective A2
+usually adverb A1
+utility noun C1
+utilize verb C1
+utterly adverb C1
+vacation noun A1
+vacuum noun C1
+vague adjective C1
+valid adjective B2
+validity noun C1
+valley noun A2
+valuable adjective B1
+value noun B1
+value verb B2
+van noun A2
+vanish verb C1
+variable adjective C1
+variable noun C1
+variation noun B2
+varied adjective C1
+variety noun A2
+various adjective B1
+vary verb B2
+vast adjective B2
+vegetable noun A1
+vehicle noun A2
+vein noun C1
+venture noun C1
+venture verb C1
+venue noun B2
+verb al adjective C1
+verdict noun C1
+verify verb C1
+verse noun C1
+version noun B1
+versus preposition C1
+vertical adjective B2
+very adjective B2
+very adverb A1
+vessel noun C1
+veteran noun C1
+via preposition B2
+viable adjective C1
+vibrant adjective C1
+vice noun C1
+vicious adjective C1
+victim noun B1
+victory noun B2
+video noun A1
+view noun A2
+view verb B1
+viewer noun B1
+viewpoint noun B2
+village noun A1
+villager noun C1
+violate verb C1
+violation noun C1
+violence noun B2
+violent adjective B1
+virtual adjective B2
+virtue noun C1
+virus noun A2
+visa noun B2
+visible adjective B2
+vision noun B2
+visit noun A1
+visit verb A1
+visitor noun A1
+visual adjective B2
+vital adjective B2
+vitamin noun B2
+vocal adjective C1
+voice noun A2
+volume noun B2
+voluntary adjective B2
+volunteer noun B1
+volunteer verb B1
+vote noun B1
+vote verb B1
+voting noun B2
+vow verb C1
+vulnerability noun C1
+vulnerable adjective C1
+wage noun B2
+wait noun A2
+wait verb A1
+waiter noun A1
+wake verb A1
+walk noun A1
+walk verb A1
+wall noun A1
+wander verb B2
+want verb A1
+war noun A2
+ward noun C1
+warehouse noun C1
+warfare noun C1
+warm adjective A1
+warm verb B1
+warming noun B2
+warn verb B1
+warning noun B1
+warrant noun C1
+warrant verb C1
+warrior noun C1
+wash noun A2
+wash verb A1
+washing noun A2
+waste adjective B1
+waste noun B1
+waste verb B1
+watch noun A1
+watch verb A1
+water noun A1
+water verb B1
+wave noun A2
+wave verb B1
+way adverb B2
+way noun A1
+we pronoun A1
+weak adjective A2
+weaken verb C1
+weakness noun B2
+wealth noun B2
+wealthy adjective B2
+weapon noun B1
+wear verb A1
+weather noun A1
+weave verb C1
+web noun A2
+website noun A1
+wedding noun A2
+Wednesday noun A1
+weed noun C1
+week noun A1
+weekend noun A1
+weekly adjective B2
+weigh verb B1
+weight noun A2
+weird adjective B2
+welcome adjective A1
+welcome exclamation A1
+welcome noun A2
+welcome verb A1
+welfare noun B2
+well adjective A1
+well adverb A1
+well exclamation A1
+well noun C1
+well-being noun C1
+west adjective A1
+west adverb A1
+west noun A1
+western adjective B1
+wet adjective A2
+what determiner  A1
+what pronoun A1
+whatever adverb C1
+whatever determiner  B1
+whatever pronoun B1
+whatsoever adverb C1
+wheat noun B2
+wheel noun A2
+when adverb A1
+when conjunction A1
+when pronoun A1
+whenever conjunction B1
+where adverb A1
+where conjunction A1
+whereas conjunction B2
+whereby adverb C1
+wherever conjunction B2
+whether conjunction B1
+which determiner  A1
+which pronoun A1
+while conjunction A2
+while noun B1
+whilst conjunction C1
+whip verb C1
+whisper noun B2
+whisper verb B2
+white adjective A1
+white noun A1
+who pronoun A1
+whoever pronoun B2
+whole adjective A2
+whole noun B1
+wholly adverb C1
+whom pronoun B2
+whose determiner  A2
+whose pronoun A2
+why adverb A1
+wide adjective A2
+widely adverb B2
+widen verb C1
+widespread adjective B2
+widow noun C1
+width noun C1
+wife noun A1
+wild adjective A2
+wildlife noun B2
+will noun B1
+will modal verb A1
+willing adjective B2
+willingness noun C1
+win noun B1
+win verb A1
+wind noun A2
+wind verb B2
+window noun A1
+wine noun A1
+wing noun B1
+winner noun A2
+winter noun A1
+wipe verb C1
+wire noun B2
+wisdom noun B2
+wise adjective B2
+wish noun A2
+wish verb A2
+wit noun C1
+with preposition A1
+withdraw verb B2
+withdrawal noun C1
+within preposition B1
+without preposition A1
+witness noun B2
+witness verb B2
+woman noun A1
+wonder noun B1
+wonder verb B1
+wonderful adjective A1
+wood noun A2
+wooden adjective A2
+wool noun B1
+word noun A1
+work noun A1
+work verb A1
+worker noun A1
+workforce noun B2
+working adjective A2
+workout noun C1
+workplace noun B2
+workshop noun B2
+world noun A1
+worldwide adjective B1
+worldwide adverb B1
+worm noun B2
+worried adjective A2
+worry noun B1
+worry verb A2
+worse adjective A2
+worse adverb B1
+worse noun B2
+worship noun C1
+worship verb C1
+worst adjective A2
+worst adverb B1
+worst noun B2
+worth adjective B1
+worth noun B2
+worthwhile adjective C1
+worthy adjective C1
+would modal verb A1
+wound noun B2
+wound verb B2
+wow exclamation A2
+wrap verb B2
+wrist noun B2
+write verb A1
+writer noun A1
+writing noun A1
+written adjective B1
+wrong adjective A1
+wrong adverb B1
+wrong noun B2
+yard noun B1
+yeah exclamation A1
+year noun A1
+yell verb C1
+yellow adjective A1
+yellow noun A1
+yes exclamation A1
+yesterday adverb A1
+yesterday noun A1
+yet adverb A2
+yet conjunction B2
+yield noun C1
+yield verb C1
+you pronoun A1
+young adjective A1
+young noun B1
+youngster noun C1
+your determiner  A1
+yours pronoun A2
+yourself pronoun A1
+youth noun B1
+zero number A2
+zone noun B2
diff --git a/app/main.py b/app/main.py
index 19bd889..9c46b5e 100644
--- a/app/main.py
+++ b/app/main.py
@@ -79,6 +79,19 @@ def mainpage():
     根据GET或POST方法来返回不同的主界面
     :return: 主界面
     '''
+
+    article_text = get_all_articles()
+    texts = [item['text'] for item in article_text]
+    oxford_words = load_oxford_words(oxford_words_path)  
+
+    # 提取所有单词
+    all_words = []
+    for text in texts:
+        words = re.findall(r'\b\w+\b', text.lower())
+        all_words.extend(words)
+    oxford_word_count = sum(1 for word in all_words if word in oxford_words)
+    ratio = calculate_ratio(oxford_word_count, len(all_words))
+
     if request.method == 'POST':  # when we submit a form
         content = escape(request.form['content'])
         f = WordFreq(content)
@@ -102,7 +115,8 @@ def mainpage():
                                d_len=d_len,
                                lst=lst,
                                yml=Yaml.yml,
-                               number_of_essays=number_of_essays)
+                               number_of_essays=number_of_essays,
+                               ratio = ratio)
 
 
 if __name__ == '__main__':
diff --git a/app/templates/mainpage_get.html b/app/templates/mainpage_get.html
index 2a9b8e3..9c2654e 100644
--- a/app/templates/mainpage_get.html
+++ b/app/templates/mainpage_get.html
@@ -31,7 +31,7 @@
             <p><a href="/login">登录</a>  <a href="/signup">注册</a> <a href="/static/usr/instructions.html">使用说明</a></p >
             <p><b> {{ random_ads }}。 <a href="/signup">试试</a>吧！</b></p>
         {% endif %}
-        <div class="alert alert-success" role="alert">共有文章 <span class="badge bg-success"> {{ number_of_essays }} </span> 篇</div>
+        <div class="alert alert-success" role="alert">共有文章 <span class="badge bg-success"> {{ number_of_essays }} </span> 篇 &nbsp;&nbsp;&nbsp;&nbsp;其中Oxford单词覆盖率为: <span class="badge bg-success"> {{ (ratio * 100) | int }}%  </span></div>
         <p>粘贴1篇文章 (English only)</p>
         <form method="post" action="/">
             <textarea name="content" id="article" rows="10" cols="120"></textarea><br/>
diff --git a/app/templates/userpage_get.html b/app/templates/userpage_get.html
index 1d0ca56..d702fb8 100644
--- a/app/templates/userpage_get.html
+++ b/app/templates/userpage_get.html
@@ -66,6 +66,7 @@
 
     </p>
     {% for message in get_flashed_messages() %}
+
     <div class="alert alert-warning alert-dismissible fade show" role="alert">
 	{{ message }}
 	<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
@@ -88,6 +89,7 @@
             </div>
 
             <p><b id="question">{{ today_article['question'] }}</b></p><br/>
+
                 <script type="text/javascript">
                     function toggle_visibility(id) { {# https://css-tricks.com/snippets/javascript/showhide-element/#}
                         const e = document.getElementById(id);
@@ -112,6 +114,7 @@
     <input type="checkbox" id="highlightCheckbox" onclick="toggleHighlighting()" />生词高亮
     <input type="checkbox" id="readCheckbox" onclick="onReadClick()" />大声朗读
     <input type="checkbox" id="chooseCheckbox" onclick="onChooseClick()" />划词入库
+
     <div class="range">
         <div class="field">
             <div class="sliderValue">
@@ -224,7 +227,9 @@
     }
 
 
-    function load_next_article(){
+
+    function load_next_article() {
+        $("#load_next_article").prop("disabled", true)
         $.ajax({
             url: '/get_next_article/{{username}}',
             dataType: 'json',
@@ -257,7 +262,8 @@
             }
         });
     }
-    function update(today_article){
+
+    function update(today_article) {
         $('#user_level').html(today_article['user_level']);
         $('#text_level').html(today_article["text_level"]);
         $('#date').html('Article added on: '+today_article["date"]);
@@ -266,6 +272,7 @@
         $('#source').html(today_article['source']);
         $('#question').html(today_article["question"]);
         $('#answer').html(today_article["answer"]);
+        $('#ratio').html(Math.round(today_article["ratio"] * 100) + '%');
         document.querySelector('#text_level').classList.add('mark'); // highlight text difficult level for 2 seconds
         setTimeout(() => {document.querySelector('#text_level').classList.remove('mark');}, 2000);
         document.querySelector('#user_level').classList.add('mark'); // do the same thing for user difficulty level
@@ -276,7 +283,7 @@
         if((visited_articles=='')||(visited_articles['index']<=0)){
             $('#load_pre_article').hide();
             sessionStorage.setItem('pre_page_button', 'display')
-        }else{
+        } else {
             $('#load_pre_article').show();
             sessionStorage.setItem('pre_page_button', 'show')
         }