#include <fstream>
#include <iostream>

using namespace std;
int main()
{
    int i, n, a, b, c, d;
    ifstream f("chatnoir.in");
    ofstream g("chatnoir.out");
    f>>n;
    for(i=1; i<=n; i++)
    {
        f >> a >> b >> c >> d;
        if(c<=5 || d<=5 || a-c<=4 || b-d<=4) g <<"DA\n";
        else g <<"NU\n";
    }
    return 0;
}