#include <stdio.h>

int main() {
    char a,Vowel[]="aeiouAEIOU";
    int i=0,m;
    while(~scanf("%s",&a))
    {
        while(Vowel[i])
        {
            if(a==Vowel[i]) {m=1;break;}
            else m=0;
            i++;
        }i=0;
        if(m==1) printf("Vowel\n");
        else printf("Consonant\n");
    }
    
    return 0;
}