#include <fstream>
#include <algorithm>

using namespace std;

int T, N, M, X, Y;

int main()
{
	ifstream fin("chatnoir.in");
	ofstream fout("chatnoir.out");
	
	fin >> T;
	while (T--)
	{
		fin >> N >> M >> X >> Y;
		
		int mindist = min(min(X, Y), min(N - X + 1, M - Y + 1));
		
		if (mindist >= 6) fout << "NU\n";
		else              fout << "DA\n";
	}
	
	fin.close();
	fout.close();
}