〈a, b | aa=a, abbab=aba〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ab

Complete rewriting system

1. a² ⇒ a
2. a(ba)² ⇒ (ab)²
3. abab² ⇒ aba
4. ab²ab ⇒ aba

Right Cayley graph (truncated)

Left Cayley graph (truncated)