#include <cstdio>

using namespace std;

int t, n, m, x, y;

int main()
{
    freopen("chatnoir.in", "r", stdin);
    freopen("chatnoir.out", "w", stdout);

    scanf("%d", &t);
    while(t--)
    {
        scanf("%d%d%d%d", &n, &m, &x, &y);
        if(x<=5 || y<=5 || x>=n-4 || y>=m-4)
            printf("DA\n");
        else
            printf("NU\n");
    }

    return 0;
}