Given a lowercase English letter c, determine whether it is a vowel. Here, there are five vowels in the English alphabet: `a`, `e`, `i`, `o` and `u`.
c = input()
boin = 'aeiou'
if boin.find(c) == -1:
    print("consonant")
else:
    print("voel")
c = input()
boin = 'aeiou'
if boin.find(c) == -1:
    print("consonant")
else:
    print("vowel")