#include <stdio.h>

int main() {
    char ch;
    //使用scanf情况下缓冲区有残留Enter
    while (scanf("%c",&ch)!=EOF) {
        getchar(); //解决回车键残留问题
        if (ch=='a'||ch=='A'||ch=='i'||ch=='I'||ch=='o'||ch=='O'||ch=='u'||ch=='U'||ch=='e'||ch=='E') {
        printf("Vowel\n");
        } else {
        printf("Consonant\n");
        }
    }
    return 0;
}