Updated production rules:
rule_5: A4 -> 1 8 7 6 5 4 3 2
rule_8: A7 -> 25 32 31 30 29 28 27 26
rule_9: A8 -> 33 24 23 22 21 20 19 18
rule_10: A9 -> 34 41 40 39 38 37 36 35