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put six on each side .. take the heaviler side and put three on each side TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。" a; @  h; W! ^% l( ^' |* U
take two balls out of the heaviler side and put on each side
, f+ [! {: C0 Q  a; a- g) Yif they r the same the reminder is the heavy ball otherwise u know which one is the heavy ball