#include<fstream>
using namespace std;

ifstream f("chatnoir.in");
ofstream g("chatnoir.out");

int N, M, T;

int dist(int x, int y)
{	int mind = 1000 * 1000;
	
	mind = min(mind, y - 1);
	mind = min(mind, x - 1);
	
	mind = min(mind, N - x);
	mind = min(mind, M - y);
	
	return mind;
}

int main()
{	int i, x, y;
	
	f>>T;
	for(i = 1; i <= T; i++)
	{	f>>N>>M>>x>>y;
		
		if(dist(x, y) <= 4)
			g<<"DA";
		else g<<"NU";
		g<<'\n';
	}
	f.close();
	g.close();
	return 0;
}