#include<fstream>
using namespace std;

ifstream in("chatnoir.in");
ofstream out("chatnoir.out");

int t,n,m,x,y,dmin;

int main() {
    int i;

    in >> t;

    for(i=1;i<=t;++i) {
        in >> n >> m >> x >> y;

        int distance = min(min(x - 1, y - 1), min(n - x, m - y));
		
		if (distance <= 4)
			out << "DA\n";
		else
			out << "NU\n";
    }

    return 0;
}