let=input()
if let=='a'or let=='A' or let=='e' or let=='E' or let=='i' or let=='I' or let=='O' or n=='o' or n=='u' or n=='U':
   print("Vowel")
elif let>='a'and let<='z' or let>='A' and let<='Z':
   print("Consonant")   
else:
  print("Invalid")   
