#include <fstream>

using namespace std;

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

int t, n, m, x, y;

int main() {
  cin >> t;
  for(int i = 1; i <= t; i++) {
    cin >> n >> m >> x >> y;
    int dist;
    dist = min(n - x + 1, m - y + 1);
    dist = min(dist, min(x, y));
    cout << ((dist < 5) ? "DA" : "NU") << "\n";
  }
  return 0;
}