#include<fstream>
using namespace std;
ofstream out("chatnoir.out");
int main()
{
	ifstream in("chatnoir.in");
	int t,n,m,x,y;
	in>>t;
	for(int i=1;i<=t;i++)
	{
		in>>n>>m>>x>>y;
		if(x<=5||y<=5||x>n-5||y>m-5)
			out<<"DA"<<'\n';
		else
			out<<"NU"<<'\n';
	}
	return 0;
}