#include <fstream>
using namespace std;

int main()
{
    ifstream in("chatnoir.in");
    ofstream out("chatnoir.out");

    int T, N, M, X, Y, i;
    in>>T;
    for (i=0; i<T; ++i)
    {
        in>>N>>M>>X>>Y;
        if (X<=4 || N-X+1<=4 || Y<=4 || M-Y+1<=4)
            out<<"DA\n";
        else out<<"NU\n";
    }

    return 0;
}