#include<stdio.h>
#include<fstream>
using namespace std;

ifstream f("chatnoir.in");
ofstream g("chatnoir.out");

int N,M,X,Y,T;

int min(int a,int b)
{
	return a<b ? a:b;
}

int main()
{
	f >> T;
	for(int i=1;i<=T;i++)
	{
		f >> N >> M >> X >> Y;
		if(min(min(X-1,Y-1),min(N-X,M-Y)) <= 4)
			g << "DA\n";
		else
			g << "NU\n";
	}
	
	return 0;
}