#include<cstdio>

using namespace std;

int main()
{
  freopen("chatnoir.in", "r", stdin);
  freopen("chatnoir.out", "w", stdout);
  int t, n, m, x, y, i;
  scanf("%d", &t);
  for(i = 1; i <= t; ++ i)
  {
	scanf("%d%d%d%d", &n, &m, &x, &y);
	if(x <= 4)
	  printf("DA\n");
	else
	{
	  if(y <= 4)
		printf("DA\n");
	  else
	  {
		if(n - x <= 3)
		  printf("DA\n");
		else
		{
		  if(m - y <= 3)
			printf("DA\n");
		  else
			printf("NU\n");
		}
	  }
	}
  }
  return 0;
}