#include <fstream>
using namespace std;
ifstream f("chatnoir.in");
ofstream g("chatnoir.out");
int i,n,m,x,y;
int main ()
{
	f>>n;
	for (i=1;i<=n;i++)
	{
		f>>n>>m>>x>>y;
		if (x<=5 || y<=5 || n-x<=4 || m-y<=4) g<<"DA"<<'\n'; else g<<"NU"<<'\n';
	}
return 0;
}