12 balls names A B C D E F G H I J K L 5 L9 Y7 |7 l0 x$ f$ I5.39.217.771St A B C D : E F G H if balance * \) ~) d1 f, V V公仔箱論壇2nd A B (or either 2 of A-H) : I J if again balance if A B > I J (implies the different is light ball is I or J)公仔箱論壇) v& J% G4 C. Q' F6 c. N
3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different) . ^; o# F1 Q9 x# t" x! b5.39.217.77L is different