#include <fstream>

using namespace std;

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

int test;
int n,m,r,c;

int main()
{
    fin>>test;
    while(test--)
    {
        fin>>n>>m>>r>>c;
        int x=min(min(r,c),min(n+1-r,m+1-c));
        if(x<=5)
            fout<<"DA\n";
        else
            fout<<"NU\n";
    }
    return 0;
}