4 a 10 2 July 8, 2019 16 32 64 128 A 4 10 25 4 10 26 4 10 2 5 4 10 20 4 10 2 locomotive 4 10 24 4 10 22 4 10 2 3 4 10 21 4 10 20 rule 4 10 2 8 4 10 2 9 4 10 2 15 4 10 2x 4 10 2 3 1