〈a, b | aa=1, babbbab=bb〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ab

Complete rewriting system

1. a² ⇒ 1
2. b⁴ab ⇒ bab⁴
3. bab³ab ⇒ b²

Right Cayley graph (truncated)

Left Cayley graph (truncated)