|-------------------------------------------------------------
|-----------3-------------2-------------3---------2---2-3-2---
|-------2-----2-------2-----2-------4-----4-------------------
|-----0---0---------2---2---------4---4---------4---4---------
|---0-------------0-------------2-------------2---------------
|-------------------------------------------------------------
|-----------0-------------0-------------2-------------2-----
|-------0-----0-------2-----2-------2-----2-------3-----3---
|-----------------------------------------------------------
|-----2---2---------2---2---------4---4---------4---4-------
|-----------------0---------------------------2-------------
|---0---------------------------2---------------------------
|-----------3-------------3-------------5-------------5-----
|-------3-----3-------3-----3-------5-----5-------5-----5---
|-----------------------------------------------------------
|-----5---5---------5---5---------7---7---------7---7-------
|-----------------------------------------------------------
|---3-------------3-------------5-------------5-------------