#include <fstream>

using namespace std;

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

void test(){
    int n, m, x, y, dist;

    fin >> n >> m >> x >> y;

    dist = min(n - x, x);
    dist = min(min(dist, m - y), y);
    if(dist <= 4){
        fout << "DA\n";
    }else{
        fout << "NU\n";
    }
}

int main()
{
    int t;

    fin >> t;
    while(t--){
        test();
    }
    return 0;
}