f--f-s- o-d--s--- f-h- f-p-d-- s--s-a- o-a-p-- [7y]--[6y] i p s d-j-h f s f d---[6y] i p s d-j-k h f h k - j - h - f-s-o- i--p-- o---- [9p]-[7a]-[9s]-[8f]-h [0l] k j h [9k] j h g [0j] h g f d [7f] [$a] [3p]-- [9p]-p o o [0s] 0 a-p- [8o]- [9p]--- f--f-s- o-d--s--- f-h- f-p-d-- s--s-a- o-a-p-- y--y i p s d-j-h f s f d---y i p s d-j-k h f h [8l] - [7k] - [6j] - [8f]--[0s]-- [9p]-[5u] - 5 [0p] - a-- f-- p