# include <cstdio>

const char *FIN = "chatnoir.in", *FOU = "chatnoir.out";

int T, N, M, X, Y;

inline int min (int a, int b) {
    return a < b ? a : b;
}

int main (void) {
    freopen (FIN, "r", stdin);
    freopen (FOU, "w", stdout);

    for (scanf ("%d", &T); T; --T) {
        scanf ("%d %d %d %d", &N, &M, &X, &Y);
        printf ("%s\n", min (min (X, Y), min (N - X + 1, M - Y + 1)) > 5 ? "NU" : "DA");
    }
}