import re
text = input()
vowels = 'aeiouAEIOU'
consonants = 'qwrtypsdfghjklzxcvbnmQWRTYPSDFGHJKLZXCVBNM' 
pattern = rf'(?<=[{consonants}])([{vowels}]{{2,}})(?=[{consonants}])'

matches = re.findall(pattern, text)
if matches:
    for match in matches:
        print(match)
else:
    print(-1)

import re 

S = input()
a=map(lambda x: x.group(),re.finditer(r'(?<=[qwrtypsdfghjklzxcvbnmQWRTYPSDFGHJKLZXCVBNM])([A,E,I,O,U,a,e,i,o,u]{2,})(?=[qwrtypsdfghjklzxcvbnmQWRTYPSDFGHJKLZXCVBNM])',S))
q=list(a)
k=bool(q)
if k==False:
    print('-1')
else:
    for t in q:
        print(t)

import sys, re

VOWELS, CONSONANTS = "aeiou", "qwrtypsdfghjklzxcvbnm"
S = sys.stdin.read()

match_iter = re.finditer(rf"(?<=[{CONSONANTS}])[{VOWELS}][{VOWELS}]+(?=[{CONSONANTS}])", S, flags=re.I)
first_match = next(match_iter, None)

#Check if iterator is empty
if first_match: 
    print(first_match.group())
    for match in match_iter:
        print(match.group(), sep='\n')
else:
    print('-1')