import java.util.*;

public class SolutionByAshutosh {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);//creating object of scanner class
        char alpha = sc.next().charAt(0);//way to input a single character using scanner class
        alpha = Character.toLowerCase(alpha);//converting the character to lower case in case if it is not
        if (isVowel(alpha))//calling isVowel() function it will check whether the entered character is vowel or not
            System.out.println("Vowel");
        else
            System.out.println("Consonant");

    }

    public static boolean isVowel(char ch) {
        boolean isvowel = false;
        switch (ch) {
            case 'a':
            case 'e':
            case 'i':
            case 'o':
            case 'u':
                isvowel = true;

        }

        return isvowel;
    }

}
