12 balls names A B C D E F G H I J K Ltvb now,tvbnow,bttvb+ U% a4 M" c& i7 a' y
1St A B C D : E F G H if balance 公仔箱論壇% P+ O5 j7 M* J
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)tvb now,tvbnow,bttvb1 \5 `8 p5 H1 [5 W' U
3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)
& s" E( w; O" A" T/ `tvb now,tvbnow,bttvbL is different |