--3-3-3----------1-1-1-------------------------------------------------|
--------4--------------3-------------------------4-4-4-1---------------|
--0-0-0----------------------------0-0-0---1-1-1-0-------------0-0-0---|
--------1--------3-3-3-0--------------------1------------------------0-|
-----------------------------------------------------------------------|
-----------------------------------------------------------------------|
--------1-1-1-------3-3-1-----------3-3-1-----------3-3-1------------3-|
--------------3-----------4-------3-------4-------3------4-----------3-|
1-1-1-0---------------------------0---------------0------5-----5-----4-|
----------------------------1-1-3-----------1-1-3--------5-----4-----5-|
---------------------------------------------------------------6-----5-|
---------------------------------------------------------------------3-|
----4-4-4-1------------------------------------------------------------|
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