Certificate for #20173 ⟨a, b | aab=b, bbbb=bab⟩

Completion settings:

• Reduction order:
  • Left-to-right recursive path with deg(b) = 0; deg(a) = 1

Axiom: aab=b.

Defines rule #2.

Axiom: bbbb=bab.

Flip LHS and RHS.

Defines rule #1.