〈a, b | aaabba=aab〉

Properties

• Infinite non-commutative monoid

Completion parameters

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

Complete rewriting system

1. cab ⇒ c²ba
2. acbc ⇒ c²ba
3. acba ⇒ c
4. a²b ⇒ c