〈a, b | abbaab=baa〉

Properties

• Infinite non-commutative monoid

Completion parameters

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

Complete rewriting system

1. abcb ⇒ c
2. bac ⇒ (cb)²
3. ba² ⇒ c
4. abc² ⇒ ca²