[ok] l z z-k-z o v-z-k - [ol] z x x-l-x o---- [pl] z x x-l-x I b-C-z - [ok] l z z-v-z o--I-- [ux] C v v-x-v u-x v-x - [sl] z x x-l-x s--a-- [pl] z x x-l-j I-k l-j - [oh]