f-g- h-j k l- z l k-j- h-h-g-- d-f- g-h j k- l k j-h- g-g-f-- f-g- h-j k l- z l k-j- h-h-g-- d-f- g-h j k- l k j-h- g-g-f-- x-x- x-z-c x z-z-l---- l- l- l-l-l l c-x-z---- z- x- c-v-c x c-z-l---- h- h- h-h-h h c - x z-- z-l- k - j h-- k-j- h - g f---- h- h- h-h-h h c - x z-- z-l- k - j h-- k-j- h - g f