#include<fstream>
using namespace std;
ifstream f("chatnoir.in");
ofstream g("chatnoir.out");
int a,n,m,x,y;
int main()
{
	f>>a;
	while(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;
}