〈a, b | aa=a, abbbab=bb〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ab

Complete rewriting system

1. a² ⇒ a
2. ab² ⇒ b²
3. b²ab ⇒ b³
4. b⁴ ⇒ b²

Right Cayley graph (truncated)

Left Cayley graph (truncated)