#include <stdio.h>

int main() {
    char ch;
    
    while(scanf("%c",&ch) != EOF)
    {
       getchar();//吃掉\n
       if(ch == 'a' ||ch =='A'||ch=='e'||ch=='E'||\
       ch=='o'||ch=='O'||ch=='i'||ch =='I'||ch =='u'||ch =='U')
            printf("Vowel\n");
        else
         printf("Consonant\n");
    }
    return 0;
}