#include <cstdio>

int min(int x, int y) { return x < y ? x : y; } 

int main()
{
	int n, m, x, y, t;
	freopen("chatnoir.in", "r", stdin);
	freopen("chatnoir.out", "w", stdout);
	scanf("%d", &t);
	while (t--)
	{
		scanf("%d%d%d%d", &n, &m, &x, &y);
		
		int dmin = min(min(x - 1, n - x), min(y - 1, m - y));
		
		printf("%s\n", dmin < 4 ? "DA" : "NU");
	}
	return 0;
}