#include <fstream>

using namespace std;

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

string ChatNoir(int n, int m, int x, int y)
{
    if (x - 1 <= 4)
        return "DA\n";
    if (n - x <= 4)
        return "DA\n";
    if (y - 1 <= 4)
        return "DA\n";
    if (m - y <= 4)
        return "DA\n";
    return "NU\n";
}

int main()
{
    int n; f >> n;
    while (n--)
    {
        int n, m, x, y;
        f >> n >> m >> x >> y;
        g << ChatNoir(n, m, x, y);
    }
    return 0;
}