#include <stdio.h>
#include <string.h>
int main()
{
    char input = 0;
    char ch[] = "AaEeIiOoUu";
    while (scanf(" %c", &input) == 1)//在%c前面加空格来跳过空字符
    {
        if (strchr(ch, input))//用strchr来找元音
        {
            printf("Vowel\n");
        }
        else
        {
            printf("Consonant\n");
        }
    }
    return 0;
}