#include <cstdio>
#include <algorithm>

using namespace std;

int main()
{
	freopen ("chatnoir.in", "r", stdin);
	freopen ("chatnoir.out", "w", stdout);
	
	int T;
	
	scanf ("%d", &T);
	
	while (T --)
	{
		int N, M, X, Y;
		
		scanf ("%d %d %d %d", &N, &M, &X, &Y);
		
		int sus = X - 1;
		int jos = N - X;
		int dr = M - Y;
		int stg = Y - 1;
		
		int minim = sus;
		minim = min (minim, jos);
		minim = min (minim, dr);
		minim = min (minim, stg);
		
		if (minim <= 4) printf ("DA\n");
		else printf ("NU\n");
	}
	
	return 0;
}