def createVocabTokens(reviews):
    vocab = []
    for review in reviews:
        token = extractCleanWords(review)
        vocab.extend(token)
    vocab = sorted(list(set(vocab)))
    return vocab
def createVocabTokens(reviews):
    vocab = []
    for review in reviews:
        token = extractCleanWords(review)
        vocab.extend(token)
    vocab = sorted(list(set(vocab)))
    return vocab