#include <iostream>
#include <cstdio>

using namespace std;

int main() {

	freopen("chatnoir.in", "r", stdin);
	freopen("chatnoir.out", "w", stdout);

	int n, m, x, y, t, mn;

	cin >> t;

	for(int i = 0; i < t; i ++) {
		cin >> n >> m >> x >> y;
		mn = min(x - 1, n - x);
		mn = min(mn, y - 1);
		mn = min(mn, m - y);

		if (mn <= 4)
			cout << "DA\n";
		else
			cout << "NU\n";

	}
}