put six on each side first
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, w" T( |& f* z* M7 Z7 Zfrom the heavier six, split it to three on each side; O( ~: |" I9 }
' P3 [& K9 F. l' G& ]4 R/ {then there is three left, put one on each side, if one is heavier then that is it, if they are balanced then last one is heavy one |