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