#include <fstream>

using namespace std;

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

int main()
{
    int t, n, m, x, y, i;
    fin>>t;
    for(i=1; i<=t; i++)
    {
        fin>>n>>m>>x>>y;
        if(x<=5 || y<=5 || n-x<=4 || m-y<=4) fout<<"DA\n";
        else fout<<"NU\n";
    }
    return 0;
}