12 balls names A B C D E F G H I J K L1 ?$ O6 p0 z5 |7 W6 B2 f
1St A B C D : E F G H if balance
' {6 ?5 T3 `) j2nd 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)
- W) M9 A, W* \3 o6 I* h4 stvb now,tvbnow,bttvb3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)tvb now,tvbnow,bttvb8 c- Z8 C- N' _5 m7 |1 C2 ^
L is different |