#include<fstream>
using namespace std;
int n,m,x,y,t;
int main()
{
	ifstream f("chatnoir.in");
	ofstream g("chatnoir.out");
	f>>t;
	while(t--)
	{
		f>>n>>m>>x>>y;
		if(x<5||y<5||n-x<5||m-y<5)
			g<<"DA\n";
		else
			g<<"NU\n";
	}
	return 0;
}