#include <fstream>

using namespace std;
ifstream in("chatnoir.in");
ofstream out("chatnoir.out");
int main()
{
    int n,m,x,y,t,i;
    in>>t;
    for(i=1;i<=t;i++)
  {
      in>>n>>m>>x>>y;
  if(x<=5 || y<=5 || x>=n-4 || y>=m-4)
             out<<"DA"<<"\n";
  else
       out<<"NU"<<"\n";
  }
    return 0;
}