Python 입력 단어의 모음 출력하기

vowels = ['a', 'e', 'i', 'o', 'u']
word = input("put the word: ")
found = []
 
for letter in word:
    if letter in vowels:
        if letter not in found:
            found.append(letter)
 
for vowel in found:
    print(vowel)