#include <fstream>
using namespace std;
ifstream cin("chatnoir.in");
ofstream cout("chatnoir.out");
long t,n,m,x,y,i;
int main()
{
  cin>>t;
  for (i=1;i<=t;++i){
                     cin>>n>>m>>x>>y;
                     if (min(x,min(n-x+1,min(y,m-y+1)))<6) cout<<"DA \n";
                                                       else cout<<"NU\n"; 
                    }
return 0;
}