〈a, b | abb=aab, baa=bb〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right a/b

Complete rewriting system

1. ba⁸ ⇒ ba⁶
2. a²b ⇒ aba²
3. b² ⇒ ba²
4. baba² ⇒ ba⁴

Right Cayley graph (truncated)

Left Cayley graph (truncated)