#include <cstdio>
#include <cstdlib>
using namespace std;


int main()
{
    freopen("chatnoir.in", "r", stdin);
    freopen("chatnoir.out", "w", stdout);
    int T, N, M, X, Y;
    scanf("%i", &T);
    while(T --)
    {
            scanf("%i %i %i %i", &N, &M, &X, &Y);
            if(X <= 5 || Y <= 5 || X >= N - 4 || Y >= M - 4) printf("DA\n");
            else printf("NU\n");
    }
    return 0;
}