#include<stdio.h>
#include<ctype.h>
int main()
{
char c;
scanf("%c",&c);
if(!isalpha(c))
{
    printf("Invalid input");
    return 0;
}
else
{
    (c=='a'||c='A'||c='e'||c='E'||c='i'||c='I'||c='o'||c='O'||c=='u'||c=='C')
    {
        printf("VOWEL");
    }
    else
    {
        printf("CONSONANT");
    }
}