User blog comment:VoidSansXD/Mega recursive function part 5/@comment-32994025-20190213013804

Heya

I'm very confused about the ambiguity of rule 8. For example, how does n'3'a decompose back to smaller, say, in form of \(a\underset{e}{\underbrace{-\cdots-}}b,c\underset{e}{\underbrace{-\cdots-}}d\)?