My biggest problem with this edit is that there is a reason the rules are not listed in order. But because the book itself doesn't mention it I can't really put it into the article. What's it called, original research?

Pattern
Add Neighbor 11 The easest rule
Double Add Neighbor 12 One more
Add Half Neighbor 6 Half 12
Double Add Half Neighbor 7 One more
Subtract... Add Neighbor 9 The remaining rules are
the remaining digits counting
backwards except 10 and 5
Subtract... Double Add Neighbor 8
Subtract... Add Half Neighbor 4
Subtract... Double Add Half Neighbor 3

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