#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;

	scanf("%d", &t);

	for(int i = 0; i < t; i ++) {
		scanf("%d %d %d %d", &n, &m, &x, &y);
		mn = min(min(x - 1, n - x), min(y -1, m - y));

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

	}
}