#include <iostream>
#include <fstream>

using namespace std;

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

bool sol(int n, int m, int x, int y) {
    return ( min( min(x - 1, y - 1), min(n - x, m - y) ) <= 4 );
}

void rezolva() {
    int t, n, m, x, y;
    in >> t;
    while ( t-- ) {
        in >> n >> m >> x >> y;
        if ( sol(n, m, x, y) ) out << "DA\n";
        else out << "NU\n";
    }
}

int main() {
    rezolva();
    return 0;
}