#include <fstream>

using namespace std;

int main() {
  ifstream cin("chatnoir.in");
  ofstream cout("chatnoir.out");
  int t, n, m, a, b, mn;

  cin>>t;
  while( t-- ) {
    cin>>n>>m>>a>>b;
    mn = 2100000000;
    mn = min( a, mn );
    mn = min( n - a, mn);
    mn = min( b, mn );
    mn = min( m - b, mn );
    if( mn <= 4 )
      cout<<"DA";
    else
      cout<<"NU";
      cout<<"\n";
  }
  return 0;
}