Updated production rules:
rule_26: A14 -> A12 1 8 9 5
rule_31: A15 -> A22 A16 16 11
rule_43: A22 -> A23 17 6
rule_49: A24 -> A30 A25 20 19
rule_60: A31 -> A9 A19 12 13 21
rule_66: A32 -> A38 A33 29 25 24
rule_76: A39 -> A8 1 14 15