l-s f d s h j h h f s g j g f h f d f g h j k l-s f d s h j h h f s g j g f h f d f d s - l-s f d s h j h h f s g j g f h f d f g h j k l-s f d s h j h h f s g j g f h f d f d s - h-l l k l l k l z k h h-z z l z z l z x-z l x z l k j h l j h f s g j g f h f d f d s - h-l l k l l k l z k h h-z z l z z l z x-z l x z l k j h l j h f s g j g f h f d f d s