#include <cstdio>

using namespace std;
inline int minim(int a, int b)
{
    if(a<b)
        return a;
    return b;
}
int main()
{
    freopen("chatnoir.in", "r", stdin);
    freopen("chatnoir.out", "w", stdout);
    int i, t, n, m, x, y, lmin, cmin;
    scanf("%d", &t);
    for(i=1;i<=t;i++)
    {
        scanf("%d%d%d%d", &n, &m, &x, &y);
        lmin=minim(x, n-x+1);
        cmin=minim(y, m-y+1);
        if(minim(lmin, cmin)<=5)
            printf("DA\n");
        else printf("NU\n");
    }
    return 0;
}