#include<fstream >

using namespace std;

int t , n , m , min ,x,y;

int main()
{
    ifstream cin("chatnoir.in");
    ofstream cout("chatnoir.out");
    cin>>t;
    for (int i=1; i<=t ; i++)
        {
              cin>>n>>m>>x>>y;
             // cout<<n<<m<<x<<y;
              int min=x-1;
              if (min>n-x) min=n-x;
              if (min>y-1) min=y-1;
              if  (min>m-y) min=m-y;
              if (min>=5) cout<<"DA"<<"\n";
                 else cout<<"NU"<<"\n";
                 }
return 0;
}