put six on each side first
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from the heavier six, split it to three on each side
- a6 J# s* i7 R$ l etvb now,tvbnow,bttvb9 M( h ~6 S0 l3 W8 J
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 |