-----4---6----4----6----4---6---3--3-5--------3--3--3---0-0-0-2-|
-1------1--1-----1----1----1---1--------1-------------1-------0-|
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----2---------2-----2-------------------2------2--------------2-|
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---2---2------2----21---5---8---5---3----2----21-----------4--4\-|
-----3--------3---------3------------3---------3--------------0--|
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-------------------0---------0-----------------0--------------0--|
---------------1--------1-----------------1----1--------------1--|
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