popular_words

def popular_words(user_text, lst) :

    user_text = user_text.lower().split()
    res = {}
    for x in lst:
        res[x] = user_text.count(x)

    return res





print(popular_words('''When I was One I had just begun When I was Two I was nearly new ''', ['i', 'was', 'three', 'near']))