def word_count(text):

    text = [("Я пришел, я ушел, я нашел")]
    text = text.lower()
    for i in text:
        if i in text:
            text[i] = text[i] + 1
        else:
            text[i] = -1
    return text


p = word_count
for p in text:
    print(p)