If you think the other guys version is right check out this one!!
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--------12----12---10--12-------------------------4x
---------------------------12-11-10-------8---
-------------------------------------10------10

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-----------5----5---3--5--------------------------2x
-------------------------5---4-----3----1-----
---------------------------------------3--3---


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-------(2)----------------------------------------------------3x()=3x
-------(2)--(3)-------------------------------------
-------(0)--(5)--(3)-----------------------------------
---------------(5)-----------------------------------