#include <fstream>

#define IN "chatnoir.in"
#define OUT "chatnoir.out"

using namespace std;

ifstream fin(IN);
ofstream fout(OUT);

int T;
int N,M,X,Y;

int main()
{
      fin>>T;
      while(T--)
      {
        fin>>N>>M>>X>>Y;
        if(X<=5 || Y<=5 || N-X<=4 || M-Y<=4)
            fout<<"DA";
        else
            fout<<"NU";
      }

      return 0;
}