#include <iostream>
#include <fstream>
using namespace std;

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

int main()
{
    int t,n,m,i,x,y;
    in>>t;
    for(i=1;i<=t;i++)
    {
        in>>n>>m>>x>>y;
        if(n-x+1<6||m-y+1<6||x<6||y<6)
            out<<"DA"<<'\n';
        else
            out<<"NU"<<'\n';

    }
    return 0;
}