#include <fstream>

using namespace std;
ifstream in("chatnoir.in");
ofstream out("chatnoir.out");
int main()
{
    int n,m,t,x,y;
    in>>t;
    while(t--)
    {
        in>>n>>m>>x>>y;
        int mn=min(n-x,m-y);
        if(mn>=9)
        {
            out<<"NU"<<"\n";
        }
        else
        {
            out<<"DA"<<"\n";
        }
    }
    return 0;
}