#include <fstream>
using namespace std;

int T,N,M,X,Y;

int main() {

    ifstream in("chatnoir.in");
    ofstream out("chatnoir.out");

    in>>T;
    while(T--) {

        in>>N>>M>>X>>Y;
        out<<((X<=5||Y<=5||N-X<5||M-Y<5)?"DA":"NU")<<'\n';

        }

    in.close();
    out.close();

    return 0;

}