# include <cstdio>

# define min(a,b) (a < b ? a : b)

using namespace std;

int rez, nr, n, m, x, y;
int main()
{int i;
    
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    
    scanf("%d",&nr);
    
    for (i = 1; i <= nr; i++)
    {
        scanf("%d%d%d%d",&n,&m,&x,&y);
        rez = min(x - 1,min(y - 1, min(n - x, m - y)));
        
        if (rez <= 4) printf("DA\n");
                else printf("NU\n");
        }
        
return 0;
}