#include <stdio.h>

int main()
{
	char n;
	while ((scanf("%c", &n)) != EOF)
	{
		getchar();
		if (n == 'A' || n=='a' || n== 'E' || n=='e' || n=='I' || n=='i' || n=='O' || n=='o' || n=='U' || n=='u')
			printf("Vowel\n");
		else
			printf("Consonant\n");
	}

	return 0;
}