Ex. 12 July 8, 2019 16 32 64 128 Ex. 12.1 class 10 Ex. 12.2 class 10 Ex. 12.1 class 9 Ex. 12.2 class 8 Ex. 12.1 class 8 Ex. 12.1 class 12 Ex. 12.3 class 10 Ex. 12.2 class 11 Ex. 12.1 class 7 Ex. 12.3 class 7 Ex. 12.2 class 7 Ex 12 class 9
