#include<fstream>
using namespace std;
int main()
{
	int n,m,x,y,t,i;
	ifstream fin("chatnoir.in");
	ofstream fout("chatnoir.out");
	fin>>t;
	for(i=1;i<=t;i++)
	{
		fin>>n>>m>>x>>y;
		if(x<6 || y<6 || n-x<6 || m-y<6)
			fout<<"DA"<<"\n";
		else
			fout<<"NU"<<"\n";
	}
	return 0;
}