#include <iostream>
#include <fstream>

using namespace std;

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


int x,y,lin,col,n;


inline int minim(int x, int y)
{
    if(x>y)
        return y;
    return x;
}

inline int distanta()
{
    return minim(minim(x-1,lin-x),minim(y-1,col-y));
}


int main()
{
    int i;
    in>>n;
    for(i=1;i<=n;++i)
    {
        in>>lin>>col>>x>>y;
        if(distanta()>=3)
            out<<"NU\n";
        else
            out<<"DA\n";
    }
    return 0;
}