〈a, b | ab=a, bbba=bbaa〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ab

Complete rewriting system

1. ab ⇒ a
2. a³ ⇒ a²
3. b³a ⇒ b²a²

Right Cayley graph (truncated)

Left Cayley graph (truncated)