s f f a d d s d f g f d s f f a d d s f d s p o s f f a d d s d f g - f h f g f d s f d s p o s f f a d d s d f g f d s f f a d d s f d s p o s f f a d d s d f g - f h f g f d s f d s a p o - p-f g f d f s p o u o p - s f d s a p o - p - d f d d f g f h f g f d s f d s a p o - p-f g f d f s p o u o p - s f d s a p o - p - d f d d f g f h f g f d s f d s p o f o o d o o s d f g f d f o o d o o s f d s p o f o o d o o s d f g - f h f g f d s f d s p o f o o d o o s d f g f d f o o d o o s f d s p o f o o d o o s d f g - f h f g f d s f d s p o