----3--------3------------------1---------------------------------
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----3-----3-------------------------------------------------------
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-------------------------------------0----------------------------
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----3--------3------------------1---------------------------------
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----3-----3-------------------------------------------------------
----2-------------------------------------------------------------
-------------------------------------0----------------------------
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----3--------3------------------1---------------------------------
----4--4--4--4-------0----0----6---1----------------------9-------
----3-----3-------------------------------------------------------
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----3--------3------------------1---------------------------------
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----3-----3----------------------------------(v.2 5)--------------
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