#include<fstream>
ifstream fin("chatnoir.in");
ofstream fout("chatnoir.out");
int i,j,t,n,m,x,y,s1,s2,s3,s4,min,nrparc;
int main()
{fin>>t;
for(nrparc=0;nrparc<t;nrparc++)
{fin>>n>>m>>x>>y;
 min=0;
 s1=x;s2=y;s3=n-x+1;s4=m-y+1;
	if (s1<6||s2<6||s3<6||s4<6)
		fout<<"DA";
	else
		fout<<"NU";
	fout<<'\n';
}
fin.close();
fout.close();
return 0;
}