import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String[] strs = {"A","a","E","e","I", "i","O","o","U","u"};
        while(scanner.hasNext()) {
            String str = scanner.next();
            int i;
            for(i = 0; i < strs.length; i++) {
                if(strs[i].equals(str)) {
                    System.out.println("Vowel");
                    break;
                }
            }
             if(i >= 10) {
                System.out.println("Consonant");
            }
            
        }
    }
}