A 0 b 1 c 2 d 3 e 4 July 8, 2019 16 32 64 128 1 2 3 4 a b c d e f g A(d 0 -3) b(0 3 c) C(0 -1 -2) b(4 0 1) d(2 3 1) A(4 0 2) b(0 0 1) c(3 5 -2)
