So we start with COVID-19 forests. There it is to get the now to forest from the initial size of one centimeter of one centimeter into something about this big. So we are compressing them into stages. The first one is simply pushing the antibers together in one direction. And by the time one axis becomes small enough, we start pushing from the perpendicular direction to get eventually a cube. And this point we start pressing first direction, first and second one. You can see that slowly, surely the second density curve pushes the antibers and compressing them smaller and smaller.