c = eval(input())



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



if c in list:

  print('vowel')

else:

  print('consonant')
s = eval(input())

a = {'a','i','u','e','o'}



if s in a:

  print('vowel')

else:

  print('consonant')
c = eval(input())
list = ["a", "i", "u", "e", "o"]
if c in list:
    print("vowel")
else:
    print("consonant")

s = eval(input())
a = {"a", "i", "u", "e", "o"}
if s in a:
    print("vowel")
else:
    print("consonant")

-c = eval(input()) -list = ["a", "i", "u", "e", "o"] -if c in list: +s = eval(input()) +a = {"a", "i", "u", "e", "o"} +if s in a: