---

s = input("Введите слово на русском языке: ")
vowels = "аеёиоуыэюяАЕЁИОУЫЭЮЯ"
result = ""
for c in s:
    if c in vowels:
        result += "_"
    else:
        result += c.lower()
for c in result:
    print(c)