# include <fstream>
# include <algorithm>

using namespace std;

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

int main ()
{
    int t, n, m, x, y;

    f >> t;

    for ( int i = 1; i <= t; ++ i )
    {
        f >> n >> m >> x >> y;

        if ( n - x < 5 || m - y < 5 || x < 5 || y < 5 )
            g << "DA";
        else
            g << "NU";

        g << "\n";

    }





        return 0;
}