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Create proverbs4.txt

Create idioms4.txt

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Delete knowledge-base/proverbs/proverbs4.txt

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Api doc

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Upload 4 files

Create idioms4.txt

Create idioms3.txt

Update knowledge-base/idioms/idioms2.txt

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Added documentation testing

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Some modifications

Slight update

Update knowledge-base/vocabulary/native/native_vocabulary.txt

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Update requirements.txt

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Update knowledge-base/vocabulary/native/native_vocabulary.txt

Update knowledge-base/vocabulary/native/native_vocabulary.txt

Update knowledge-base/vocabulary/intermediate/intermediate_vocabulary.txt

Update knowledge-base/vocabulary/beginner/beginner_vocabulary.txt

Update app.py

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Update app.py

Update app.py

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