------10----------10----------------10----------10---------------- 0
---10----10----10----10----------10----10----10----10------------- 0
12----------12----------(X2)--11----------11-----------(X2)------- 0 x4
------------------------------------------------------------------ 0
------------------------------------------------------------------ 0
------------------------------------------------------------------ 0

------------------------------------------ 0
-8-/-(b9)/-10------------------------------- 0
-8-/-(b9)/-10------------------------------- 0
------------------------------------------ 0
------------------------------------------ 0
------------------------------------------ 0