o s-s a s d s-s d a o f-f d f g h g f d-o s-s a s d f-f g f g h f s o p a s - s- o s-s a s d s-s d a o f-f d f g h g f d-o s-s a s d f-f g f g h f s o p a s - s- f h-f l-l j-g d f g f d s h g f d f g h j k l-l k l j h g f g f d h g f o p a s - s- f h-f l-l j-g d f g f d s h g f d f g h j k l-l k l j h g f g f d h g f o p a s - s