〈a, b | aabbbba=abb〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right cba
• Auxiliary generator abbbb=c

Complete rewriting system

1. cb² ⇒ c²a
2. ac² ⇒ c²a
3. ab² ⇒ aca
4. a(ca)² ⇒ c