-----------------------|-----------------------------------------------------
-----------------------|-------------------------5---------------------------
-----------------------|-----5-5-7--5------4--6----7--------------5----------
-----7---5-----7--5----|---7----------8-7------------7------7-5-8---8-7-5----
-5-8---8---8-7-------5-|-8------------------------------7-5---------------8--
-----------------------|-----------------------------------------------------

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-7---5-----------------------------------------------------------------------
---------5-------------------------------------------------------------------
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