#include <fstream>
#include <algorithm>
#include <cmath>

using namespace std;

ifstream fin("chatnoir.in");
ofstream fout("chatnoir.out");

int t,n,m,x,y;

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