--------------------------------------------------------
--------------------------------------------------------
-------------------------------------------------------- X 2
---------------2-2--------------------------------------
-----------2-4-----5-4-2-4------------------------------
--0-0-3-4------------------3-4--------------------------
--------------------------------------------------------
--------------------------------------------------------
----------------2-2-------------------------------------
-----------2-4------5-4-2-4-----------------------------
--0-0-3-4-------------------3-4-------------------------
--------------------------------------------------------
--------------------------------------------------------
--------------------------------------------------------
--------------------------------------------------------
---------------2-2--------------------------------------
----------2-4-----5-4-2-4-------------------------------
--0-0-3-4------------------3-4--------------------------
--------------------------------------------------------
--------------------------------------------------------
----------------4-4-------------------------------------
-----------4-6-------7-6-4-6----------------------------
-------5-6--------------------5-6-----------------------
--7-7---------------------------------------------------
--------------------------------------------------------
--------------------------------------------------------
---------------2-2--------------------------------------
----------2-4-------5-4-2-4-----------------------------
--0-0-3-4--------------------3-4------------------------
--------------------------------------------------------
--------------------------------------------------------
--------------------------------------------------------
--------------------------------------------------------
--------------2-2---------------------------------------
----------2-4-----5-4-2-4-------------------------------
--0-0-3-4-----------------3-4---------------------------