#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    ifstream fin("chatnoir.in");
    ofstream fout("chatnoir.out");
    int t, n, m, x, y, d;
    fin>>t;
    for(int i=0;i<n;i++){
        fin>>n>>m>>x>>y;
        d=min(x-1,min(n-x-1,min(y-1,m-y-1)));
        if(d<5){
            fout<<"DA\n";
        }
        else{
            fout<<"NU\n";
        }
    }
    return 0;
}