#include<fstream>
using namespace std;

int x,y,n,m,t,i;
int main()
{
	ifstream f("chatnoir.in");
	ofstream g("chatnoir.out");
	f>>t;
	for(i=1;i<=t;i++)
	{
		f>>n>>m>>x>>y;
		if(min(min(x,n-x+1),min(y,m-y+1))<=4)
			g<<"DA"<<"\n";
		else
			g<<"NU"<<"\n";
	}
	return 0;
}