#include <cstdio>
using namespace std;
int main()
{ freopen("chatnoir.in","r",stdin);
  freopen("chatnoir.out","w",stdout);
  int t,n,m,x,y,minima,minimb,minim,i;
  scanf("%d",&t);
  for(i=1;i<=t;i++)
  {
  scanf("%d%d%d%d",&n,&m,&x,&y);
  if(x<=5 || x>=n-4 || y<=5 || y>=m-4)
             printf("DA\n");
  else
             printf("NU\n");
  }
    return 0;
}