import re

pattern = r'(?<=[qwrtypsdfghjklzxcvbnmQWRTYPSDFGHJKLZXCVBNM])([aeiouAEIOU]{2,})(?=[qwrtypsdfghjklzxcvbnmQWRTYPSDFGHJKLZXCVBNM])'
results = list(re.finditer(pattern, input()))
print(*[x.group(1) for x in results] if results else [-1], sep="\n")

import re

s = input()
vowels = "aeiouAEIOU"
consonants = "qwrtypsdfghjklzxcvbnmQWRTYPSDFGHJKLZXCVBNM"

pattern = r'(?<=['+consonants+'])(['+vowels+']{2,})(?=['+consonants+'])'

matches = re.findall(pattern, s)

if matches:
    for match in matches:
        print(match)
else:
    print(-1)

import re

pattern = r'(?<=[^aeiouAEIOU])([aeiouAEIOU]{2,})(?=[^aeiouAEIOU])'

s = input()

matches = re.findall(pattern, s)

if matches:
    for match in matches:
        print(match)
else:
    print(-1)

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)

from re import findall, IGNORECASE
print('\n'.join(findall(r'(?=[^aeiou]([aeiou]{2,})[^aeiou])', input(), IGNORECASE)) or -1)