#include <bits/stdc++.h>
using namespace std;

int main()
{
    ifstream cin("chatnoir.in");
    ofstream cout("chatnoir.out");
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int i, n, m, x, y, t;
    cin >> t;
    for(i = 0; i < t; i++)
    {
        cin >> n >> m >> x >> y;
        if(min(min(n - x, m - y), min(x - 1, y - 1)) <= 4)
        {
            cout << "DA\n";
        }
        else
        {
            cout << "NU\n";
        }
    }
    return 0;
}