string = input()

vowels = ['a','e','i','o','u']

result = []
word = ''
for item in string:
    if( item.lower() in vowels):
        word = word +item
    else:
        if(len(word)>=2):
            result.append(word)
        word = ''

if(len(result) == 0):
    print(-1)
else:
    for words in result:
        print(words)