p o-f f d s f h f d-f s p o s-d f g f d s p o-f f-s fgh f d - s p o s-d f s s s- p o-f f d s f h f d-f s p o s-d f g f d s p o-f f-s fgh f d - s p o s-d f s s s- h j-j j h f j-j j h f h-h h f d h-h h f d s-d f-h j l j h-f s p o s-d f s s s-h j-j j h f j l k j h f h G h h j k l k j h f d s-d f-h j-j h f d s p o s-d f s s s