-7-7-7--9-9-9--12-11-12-11-12-11-12/3-----------------------------| --------------------------------------3-3--5-5-6-6--8-7-8-7-8-7\3-| ------------------------------------------------------------------| ------------------------------------------------------------------| ------------------------------------------------------------------| ------------------------------------------------------------------| ---------------------------7-3-5-7-5-3----7-3-5--9-7-5--7-3-5\---| -3-3--5-5--6-6-8-7-8-7-------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------| --3-5-7-5--------------------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------| -----------------------------------------------------------------|