#include<fstream>
using namespace std;
ifstream in("chatnoir.in");
ofstream out("chatnoir.out");

int t, n, m, x, y;

int main(){
	int player_unu=0;

	in>>t;
	for(; t!=0; t--)
	{
		in>>n>>m>>x>>y;

		if(x<=5 || y<=5 || n-x<=4 || m-y<=4)
			out<<"DA"<<'\n';
		else
			out<<"NU"<<'\n';
	}

	return player_unu;
}