#include <fstream>

using namespace std;

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

int main() {
  int t, n, m, x, y;

  fin >> t;
  while ( t-- ) {
	fin >> n >> m >> x >> y;
    fout << ((x < 6 || y < 6 || y > m - 5 || x > n - 5) ? "DA" : "NU") << "\n";
  }
  fin.close();
  fout.close();
  return 0;
}