#include<stdio.h>


int main()
{
    char str;
    while(scanf("%c",&str)!=EOF)
    {
        getchar();
        
        if(str=='a'||str=='e'||str=='i'||str=='o'||str=='u'||str=='A'||str=='E'||str=='I'||str=='O'||str=='U'){
            printf("Vowel\n");
        }else{
            printf("Consonant\n");
        }
    }
}