import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext())
        {
            char c=sc.next().charAt(0);
            if(c=='A'||c=='E'||c=='I'||c=='O'||c=='U'||c=='a'||c=='e'||c=='i'||c=='o'||c=='u')
            {
                System.out.println("Vowel");
            }
            else{
                System.out.println("Consonant");
            }
        }
    }
}