#include <fstream>
using namespace std;

int main(){
	ifstream fin("chatnoir.in");
	ofstream fout("chatnoir.out");
	int N, M, X, Y;
	int T;
	fin >> T;
	for(; T; --T){
		fin >> N >> M >> X >> Y;
		int sw = 0;
		if(X <= 5 || Y <= 5)
			sw = 1;
		if(M - Y + 1 <= 5 || N - X + 1 <= 5)
			sw = 1;
		if(sw)
			fout << "DA\n";
		else
			fout << "NU\n";
	}

	return 0;
}