#include <cstdio>
using namespace std;
int main()
{
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    int t,m,n,x,y;
    scanf("%d\n",&t);
    for (int i=0;i<t;++i)
    {
        scanf("%d %d %d %d\n",&n,&m,&x,&y);
        if ((m-x<5)||(x<5)||(y<6)||(n-y<6))
            printf("DA\n");
        else
            printf("NU\n");
    }
    fclose(stdin);
    fclose(stdout);
    return 0;
}