#include <fstream>
using namespace std;

ifstream cin("chatnoir.in");
ofstream cout("chatnoir.out");

#define int long long

int32_t main()
{
    int t;
    cin>>t;
    for (int i=1; i<=t; i++)
    {
        int n,m,x,y;
        cin>>n>>m>>x>>y;
        int minim=min(n-x+1,x);
        minim=min(minim,min(m-y+1,y));
        if (minim<5) cout<<"DA\n";
        else cout<<"NU\n";
    }
}