〈a, b | aaaabba=ab〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ca/b
• Auxiliary generator abb=c

Complete rewriting system

1. a³c² ⇒ ca²ca
2. (a³c)²a ⇒ c
3. cb ⇒ ca²ca
4. ab ⇒ a³ca