#include <fstream>

using namespace std;
ifstream in("chatnoir.in");
ofstream out("chatnoir.out");
int main()
{
    int x;
    in>>x;
    for(int i=1;i<=x;i++)
    {
        int n,m,l,c;
        in>>n>>m>>l>>c;
        if(l<=5 || c<=5 || l>=n-4 || c>=m-4)
            out<<"DA";
        else
            out<<"NU";
        out<<"\n";
    }
    return 0;
}