#include <cstdio>

inline int min(int a, int b) {
  return a > b ? b : a;
}

int main() {
  int t, n, m, x, y;
  FILE *fin = fopen("chatnoir.in", "r");
  fscanf(fin, "%d", &t);
  FILE *fout = fopen("chatnoir.out", "w");
  for (; t > 0; --t) {
    fscanf(fin, "%d%d%d%d", &n, &m, &x, &y);
    if (min(min(x - 1, y - 1), min(n - x, m - y)) <= 4) {
      fprintf(fout, "DA\n");
    } else {
      fprintf(fout, "NU\n");
    }
  }
  fclose(fin);
  fclose(fout);
  return 0;
}