〈a, b | abb=aab, bbaa=a〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ab

Complete rewriting system

1. aba ⇒ a³
2. ab² ⇒ a²b
3. b²a ⇒ a³
4. a⁴ ⇒ a

Right Cayley graph (truncated)

Left Cayley graph (truncated)