https://www.nabunken.go.jp/research/kariuchi.html
S --> 01 02 03 04 |05| 06 07 08 09 |10| 11 12 13 14 |15| --+
S0_0 S1_0 S2_0 |
S0_1 S1_1 S2_1 |
S0_2 S1_2 S2_2 |
C |
S5_0 S4_0 S3_0 |
S5_1 S4_1 S3_1 |
S5_2 S4_2 S3_2 |
G <-- |30| 29 28 27 26 |25| 24 23 22 21 |20| 19 18 17 16 <-+