new=input()
if(new.isalpha()):
  if(new=='a'):
    print("Vowel")
  elif(new=='e'):
    print("Vowel")
  elif(new=='i'):
    print("Vowel")
  elif(new=='o'):
    print("Vowel")
  elif(new=='u'):
    print("Vowel")
  else:
    print("Consonant")
else:
  print("invalid")
