Certificate for #43 ⟨a, b | abba=b⟩

Completion settings:

• Reduction order:
  • Left-to-right shortlex with a < b

Axiom: abba=b.

Defines rule #1.

Referenced by [2].

Overlap of [1] abba=b with [1] abba=b:

Critical pair: abbb=bbba.

Flip LHS and RHS.

Defines rule #2.