put six on each side first
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. A5 |! ~7 ^( U: ]$ A- ]4 r6 V3 t( W0 `公仔箱論壇from the heavier six, split it to three on each side, B6 u! q; ?. V3 e+ A) M2 _& o
" _1 T7 J j7 L z `. Sthen 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 |