#include <stdio.h>

int main() {
    char ch;
    char vo[5]={'a','e','i','o','u'};
    while((ch=getchar())!=EOF)
        {
            getchar();
            int i=0;
            for(i=0;i<5;i++)
         {
            if(ch==vo[i]||(ch+32)==vo[i])//大小写相差32
            {
              printf("Vowel\n");break;
            }
         }  
        if(i==5)
        printf("Consonant\n");
        }
}