#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int main()
{
	char ch = 0;
	while (scanf("%c",&ch) != EOF)
	{
		getchar();//接收第一个字符信息
		if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U')
			printf("Vowel\n");
		else
			printf("Consonant\n");
	}
	return 0;
}