# include <fstream>
# include <cstdio>
# define min(a,b) (a<b?a:b)
using namespace std;

int main ()
{
	int t, n, m, x, y, d1, d2;
	ifstream fin ("chatnoir.in");
	freopen ("chatnoir.out", "w", stdout);
	fin>>t;
	for(;t--;)
	{
		fin>>n>>m>>x>>y;
		d1=min(x,n-x+1);
		d2=min(y,m-y+1);
		if (min(d1,d2)<5)
			printf("DA\n");
		else
			printf("NU\n");
	}
	return 0;
}