IF THE LETTER IS HEAVY, YOU HAVE TO PUT MANY STAMPS ON IT. 5 A D...

12. If the letter is heavy, you have to put many stamps on it. 5 A D A C (Double Comparison) 6 C B A B  The heavier the letter is, the more stamps you have to 7 A B C D 8 D A A B put on it. 9 B A D D 10 C B B A 11 C B C D