using namespace std;
#include<fstream>
int X, Y, N, M, T;
int main()
{
	ifstream in("chatnoir.in"); ofstream out("chatnoir.out");
	in >> T;
	for(;T;--T)
	{
		in >> N >> M >> X >> Y;
		int sol = min ( X, min(Y, min(N - X + 1, N - Y + 1)) );
		if( sol <= 4 ) out << "DA\n";
		else out << "NU\n";
	}
	return 0;
}