#include<fstream>
using namespace std;
int n,m,y,x,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||x>=n-4||y>=m-4)
		g<<"DA"<<"\n";
	else
		g<<"NU"<<"\n";
	}
	return 0;
}