#include <cstdio>
#include <algorithm>

using namespace std;

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

    int T, n, m, x, y;

    scanf("%d", &T);
    while(T--) {
        scanf("%d%d%d%d", &n, &m, &x, &y);
        int d = min(n - x + 1, m - y + 1);
        d = min(d, min(x, y));
        printf(d <= 5 ? "DA\n" : "NU\n");
    }
}