〈a, b | aaaa=ab, bbab=a〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right a/b

Complete rewriting system

1. a¹⁰ ⇒ a
2. ab ⇒ a⁴
3. b²a ⇒ a⁷

Right Cayley graph (truncated)

Left Cayley graph (truncated)