#1
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----6----6----10---5-----8----8---3----5---6
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--------------------------------------------
--5--5-5----8----3-----3---3-3---1---3---5--  x2
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#2
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----6----6----10---5-----8----8---3----5---6
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--------------------------------------------
--5--5-5----8----3-----3---3-3---1---3---5--  x2
--------------------------------------------

#3
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----6----6----2-----2---5-----5---3---5----6
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--------------------------------------------
--5--5-5----0---0-0---3---3-3---1---3----5--
--------------------------------------------
#1...

#3