#include <fstream>

using namespace std;

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

int main() {
    int tests;
    cin >> tests;
    for (int test = 1; test <= tests; test++) {
        int n, m, x, y;
        cin >> n >> m >> x >> y;
        if (min(min(x, n - x + 1), min(y, n - y + 1)) <= 5)
            cout << "DA\n";
        else
            cout << "NU\n";
    }
    return 0;
}