The row representing the character 12.4.2b is highlighted below.

1A 2A 2B 2C 3A 6A
Size 1 1 3 3 2 2
2 P 1A 1A 1A 1A 3A 3A
3 P 1A 2A 2B 2C 1A 2A
Type
12.4.1a R 1 1 1 1 1 1
12.4.1b R 1 −1 −1 1 1 −1
12.4.1c R 1 −1 1 −1 1 −1
12.4.1d R 1 1 −1 −1 1 1
12.4.2a R 2 2 0 0 −1 −1
12.4.2b R 2 −2 0 0 −1 1