-----------------------------------------
-----------------------------------------
-----------------------------------------
-----------------------------------------
----4-0-------4-0-------5-5---5-5---5-4-3
-2-2---2-0-2-2---2-0-3-3---3-3---3-3-----x2
--------------------------------------
--------------------------------------
--------------------------------------
--------------------------------------
----4-0-4-5-4-3-0---5-5----5-5---5-4-3
-2-2-------------3-3----3-3---3-3-----
|