#include<fstream>
using namespace std;

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

int main()
{
    int t,n,m,i,x,y;
    f>>t;
    for(i=1;i<=t;i++)
    {
        f>>n>>m>>x>>y;
        if(n-x+1 <= 5 || m-y+1 <= 5 || x <= 5 || y<= 5)
            g<<"DA\n";
        else
            g<<"NU\n";
    }
    return 0;
}