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