〈a, b | aab=ab, bbbb=ab〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right b/a

Complete rewriting system

1. b⁷ ⇒ b⁴
2. ab ⇒ b⁴

Right Cayley graph (truncated)

Left Cayley graph (truncated)