#include <cstdio>

using namespace std;

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

int main(){
    freopen("chatnoir.in", "r", stdin);
    freopen("chatnoir.out", "w", stdout);
    int t, i, n, m, x, y, dist;
    scanf("%d", &t);
    for (i=1; i<=t; i++){
        scanf("%d%d%d%d", &n, &m, &x, &y);
        dist=minim(x, minim(y, minim(n-x+1, m-y+1)));
        if (dist>=6)
            printf("NU\n");
        else printf("DA\n");
    }
    return 0;
}