s - a--- s - a s a s a d - p--- d - p d-s d f - f--- f-f-f d s a p---- s - a---- s a s a s a d - p--- d d d-d-s d f - f--- s f f f-f-s s---- p a p-s-s-p a p-s-s-p a p-d-d-p a p-d-d-s s s-f-f-s p s-f-f-d f g - s - O---- s d f-s d f-s d f--s-h- d-d---- s-h j - f---d-- s-h j - f---d---- s d f-s d f-s d f-s-s-h- d-d---- s-h j - f---d---- d f g-s-s-O- O a a-a-s- s