〈a, b | abb=aab, baaa=b〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ba

Complete rewriting system

1. bab ⇒ b³
2. a²b ⇒ ab²
3. ba³ ⇒ b
4. b⁵ ⇒ b²

Right Cayley graph (truncated)

Left Cayley graph (truncated)