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