#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;
}