#include <cstdio>
using namespace std;
int t,n,m,i,x,y;
int main()
    {
        freopen("chatnoir.in","r",stdin);
        freopen("chatnoir.out","w",stdout);
        scanf("%d",&t);
        for (i=1 ;i<=t ; i++)
        {
            scanf("%d%d%d%d",&n,&m,&x,&y);
            if (x<=5||y<=5||x>=n-4||y>=m-4)
                    printf("DA\n");
            else printf("NU\n");

        }
    }