#include <stdio.h>

int n, m, x, y;

int main ()
{
	freopen ("chatnoir.in", "r", stdin);
	freopen ("chatnoir.out", "w", stdout);
	
	int t;
	
	scanf ("%d", &t);
	
	while (t --)
	{
		scanf ("%d %d %d %d", &n, &m, &x, &y);
		
		if (x <= 5 || y <= 5 || (x >= n - 4) || (y >= m - 4))
			printf ("DA\n");
		else
			printf ("NU\n");
	}
	return 0;
}