#include <algorithm>
#include <cstdio>
using namespace std;

int T,N,M,X,Y;

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

    scanf ("%d",&T);
    for (int i=0; i<T; ++i)
    {
        scanf ("%d%d%d%d",&N,&M,&X,&Y);
        int dst=min (min (X,Y),min (N-X+1,M-Y+1));
        if (dst<=5)
            printf ("DA\n");
        else
            printf ("NU\n");
    }

    return 0;
}