Updated production rules:
rule_4: A4 -> 10 2 9 1
rule_9: A8 -> 29 A14 A13
rule_15: A13 -> 12 19 23 18
rule_27: A21 -> 2 33 1 A17 A25
rule_41: A32 -> 3 2 34 1
rule_44: A34 -> 5 30 35 29
rule_50: A39 -> 15 19 37 18
rule_57: A44 -> 16 28 38 27