#include <fstream>

using namespace std;

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

int main( ) {
    int t;
    fin>>t;
    for ( int i= 0, n, m, x, y; i<t; ++i ) {
        fin>>n>>m>>x>>y;

        if ( x<=5 || y<=5 || n-x+1<=5 || m-y+1<=5 ) {
            fout<<"DA\n";
        } else {
            fout<<"NU\n";
        }
    }

    return 0;
}