-------------------------
-----------20B---------------17--h20---------
---------------------------------------h20--- X3
-------------------------
-------------------------
-------------------------
------20-----17-------------
----------------20---p17----
----------------------------
---------------------------- X3
----------------------------
----------------------------
------20---19--h20---p19---p17-------------19--h20--p19---p17--------17------
-----------------------------------20----------------------------20------20--
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
----------------------------------17-------------------------------------------
---19--h20--p19--p17--h19---h20---------20---p19---p17-------------------------
-------------------------------------------------------------20---p19--p17-\\16-
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
---------17---------------------------------------------------------------------------
----17B^-------^17-----15--17---15----------------------------------------------------
--------------------------------------16---14--16---14----------14--------------------
----------------------------------------------------------16----------16\\14-------12--
--------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------
---------------------------------------------------------------------------14----14---B17-
-----------------------15--15-----------17--17--15----17-----15-----17--------------------
----14----16-16--14-------------16--14--------------16----16------16----16----16----16----
-16----16-----------16--------------------------------------------------------------------
------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------