#include <fstream>
#include <vector>

using namespace std;

ifstream fin ("chatnoir.in");
ofstream fout ("chatnoir.out");

int t, n, m, x, y, d, d1, d2, d3, d4;

int main ()
{
	fin >> t;
	while (t--)
	{
		fin >> n >> m >> x >> y;
		d1 = x;
		d2 = m - y + 1;
		d3 = n - x + 1;
		d4 = y;
		d = min (d1, d2);
		d = min (d, d3);
		d = min (d, d4);
		if (d <= 4) fout << "DA\n";
		else fout << "NU\n";
	}
	fin.close (); fout.close ();
	return 0;
}