#include <stdio.h>

int main()
{
    char ch = 0;
    while(scanf("%c",&ch) != EOF)
    {
        getchar();
        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;
}