20
45
---------------------------------------------
---------------------X-----------------------
--------------------X-X----------------------
--------------------XX-X-------XX------------
--------XX----------XX-XX------X-X-----------
--------XX----------XX-X-XXX------X----------
--------------------X-X--X--X--X--X-------XX-
---------------------X----XX------X-------XX-
-------------------------------X-X-----------
-------------------------------XX------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
---------------------------------------------
