#include <fstream>
using namespace std;

int T, x , y , N , M ;

int main()
{
	ifstream f("chatnoir.in");
	ofstream g("chatnoir.out");
	
	
	f>>T;
	
	for( int i = 1 ; i <= T ; ++i )
	{
		f >> N >> M >> x >> y ;
		
		
		if( ( M - y ) <= 4 || x <= 5 ||( N - x )  <= 4 || y <= 5 )
			g<<"DA"<<"\n";
		else g<<"NU"<<"\n";
		
	}
	
	f.close();
	g.close();
	
	return 0;
}