#include <cstdio>
int tc;
int main() {
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    scanf("%d",&tc);
    while(tc) {
        int n,m,x,y;
        scanf("%d %d %d %d",&n,&m,&x,&y);
        if((x >= 6) && (y >=6)) {
         if (n - x > 4 && m - y > 4)
          printf("NU\n");
         else
          printf("DA\n");
        }
         else
          printf("DA\n");
        tc--;
    }

}