12 balls names A B C D E F G H I J K L
7 o) K4 g. G) ftvb now,tvbnow,bttvb1St A B C D : E F G H if balance 公仔箱論壇' q" m* [- X2 S' b. ]% | Y
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)
$ O: b p& n% p5 L& W" V3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)
! m5 G1 q/ O5 N' M/ W4 {9 a, QL is different |