#include<fstream>
using namespace std;

int N,M,T,X,Y;

void citire();

int main(){
	citire();
	return 0;
}

void citire(){
	ifstream fin("chatnoir.in");
	ofstream fout("chatnoir.out");
	fin>>T;
	int i;
	for(i=1;i<=T;i++){
		fin>>N>>M>>X>>Y;
		if(X<=5 || X>=N-4 || Y<=5 || Y>=M-4)
			fout<<"DA"<<"\n";
		else 
			fout<<"NU"<<"\n";
	}
	fin.close();
	fout.close();
}