#include<cstdio>

using namespace std;
int t,x,y,n,m,i;
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<=4||y<=4||n-x+1<=4||m-y+1<=4)
            printf("DA\n");
        else printf("NU\n");
    }
    return 0;
}