#include<fstream>
using namespace std;

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

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