〈a, b | abb=aa, bbb=abb〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right b/a

Complete rewriting system

1. b⁵ ⇒ b⁴
2. ab² ⇒ b³
3. b³a ⇒ b⁴
4. a² ⇒ b³

Right Cayley graph (truncated)

Left Cayley graph (truncated)