#include <fstream>
#include <limits.h>
using namespace std;

ifstream f("chatnoir.in");
ofstream g("chatnoir.out");

int p,n,m,i,minim,x,y;

int main()
{
    f>>p;
    for (i=0;i<p;i++)
    {
        f>>n>>m>>x>>y;
        minim=INT_MAX;
        if (n-x<minim) minim=n-x;
        if (x-1<minim) minim=x-1;
        if (m-y<minim) minim=m-y;
        if (y-1<minim) minim=y-1;
        if (minim<=4)
         g<<"DA"<<'\n';
         else
         g<<"NU"<<'\n';
    }
    return 0;
}