#include <iostream>
#include <fstream>

using namespace std;

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

int t, n, m, x, y;

int main()
{
    int t;
    in>>t;
    for(int i=1; i<=t; i++)
    {
        in>>n>>m>>x>>y;
        if(x <=5 || n-x <= 5 || y <= 5 || m-y<=5)
            out<<"DA"<<'\n';
        else
            out<<"NU"<<'\n';

    }
    return 0;
}