the second one, my original path is here, I give a disturbance here, the disturbance that would have something like that. But ultimately, again it goes to straight line or I was coming here. It gave a disturbance here, this is a disturbance, but it actually just deflected. But in ultimately came to just here this two, what we call a behavior, if the ship behaves this way or it posses this characteristic. We will call them directionally stable, because the directions are same