#include <bits/stdc++.h>

using namespace std;

ifstream in("chatnoir.in");
ofstream out("chatnoir.out");
int t,n,m,x,y;
int main()
{
    in>>t;
    for(int i=1;i<=t;i++)
    {
        in>>n>>m>>x>>y;
        if(x-1<=4||n-x<=4||m-y<=4||y-1<=4){
            out<<"DA";
        }
        else
            out<<"NU";
        out<<'\n';
    }
    return 0;
}