#include<fstream>
using namespace std;
ifstream f("chatnoir.in");
ofstream g("chatnoir.out");
int a,n,m,x,y;
int main()
{
	f>>a;
	int i;
	for(i=1;i<=a;i++)
	{
		f>>n>>m>>x>>y;
		if(x-1<=4 || y-1<=4 || n-4<=x || m-4<=y) g<<"DA"<<endl;
		else g<<"NU"<<endl;
	}
	return 0;
}