#include <fstream>

using namespace std;

const char InFile[]="chatnoir.in";
const char OutFile[]="chatnoir.out";

ifstream fin(InFile);
ofstream fout(OutFile);

int T,N,M,X,Y;

int main()
{
	fin>>T;
	for(register int i=0;i<T;++i)
	{
		fin>>N>>M>>X>>Y;
		if(min(min(X-1,N-X),min(Y-1,M-Y))<5)
		{
			fout<<"DA\n";
		}
		else
		{
			fout<<"NU\n";
		}
	}
	fin.close();
	fout.close();
	return 0;
}