#include<fstream>
using namespace std;
int main()
{
    ifstream read("chatnoir.in");
    ofstream write("chatnoir.out");
    int T;
    int n,m,x,y;
    read>>T;
    for(int i=0 ; i<T ; ++i)
    {
        read>>n>>m>>x>>y;
        if(x<6 || y<6 || n-x<6 || m-y<6)
        {
            write<<"DA"<<endl;
        }
        else
        {
            write<<"NU"<<endl;
        }
    }
}