s-s o-o s-f h - h h j h g f d s d f-s s-s o-o s-f h - h h j h g f d s d s - f-f f-h h G h d-h h G h s - d f d s a p o p a s-o f-f f-h h G h d-h h G h s - d f d s a p o p a s