#include<stdio.h>
int main()
{
	int k;
	scanf("%d", &k);
	char ans[4][4];
	int i, j;
	i = k % 4;
	j = (k - 1) % 5;
	ans[i][1] = 'A' + j;
	ans[i][2] = '\0';
	for (int l = 0; l < 4; l++)
	{
		j = (j + 1) % 5;
		ans[i][0] = 'A' + j;
		if (l > 0)
			ans[i][1] = '\0';
		i = (i + 1) % 4;
	}
	for (i = 0; i < 4; i++)
		printf("%s\n", ans[i]);
	return 0;
}