#include <stdio.h>
#include <algorithm>

using namespace std;

int n, m, sol;
int x, y;

int  main() {

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

    int T;
    for (scanf("%d", &T); T; T--) {
        scanf("%d %d %d %d", &n, &m, &x, &y);
		if ((x <= 5 || y <= 5 || x >= n - 4 || y >= m - 4))
            printf("DA\n");
        else
            printf("NU\n");
    }

	return 0;
}