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put six on each side .. take the heaviler side and put three on each side tvb now,tvbnow,bttvb, b7 ~/ o/ o5 w/ O/ A
take two balls out of the heaviler side and put on each side
% Y! |5 I. G5 ?公仔箱論壇if they r the same the reminder is the heavy ball otherwise u know which one is the heavy ball