#include <stdio.h>

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