ch = input("")
if(ch == 'a' or ch == 'e' or ch == 'i' or ch == 'o' or ch == 'u' or ch == 'A'
       or ch == 'E' or ch == 'I' or ch == 'O' or ch == 'U'):
    print("Vowel")
elif(ch == 'b' or ch == 'c' or ch == 'd' or ch == 'f' or ch == 'g' or ch == 'h'
       or ch == 'j' or ch == 'k' or ch == 'l' or ch == 'm'or ch == 'n' or ch == 'p' or ch == 'q' or ch == 'r' or ch == 's' or ch == 't'
       or ch == 'v' or ch == 'w' or ch == 'x' or ch == 'y'or ch=='z'or ch == 'B' or ch == 'C' or ch == 'D' or ch == 'F' or ch == 'G' or ch == 'H'
       or ch == 'J' or ch == 'K' or ch == 'L' or ch == 'M'or ch == 'N' or ch == 'P' or ch == 'Q' or ch == 'R' or ch == 'S' or ch == 'T'
       or ch == 'V' or ch == 'W' or ch == 'X' or ch == 'Y'or ch=='Z' ): 
    print("Consonant")
else:
    print("invaild") 
