Certificate for #410 ⟨a, b | abbabba=b

Completion settings:

[1] abbabba=b

Axiom: abbabba=b.

Defines rule #2.

Referenced by [2].

[2] bbba=abbb

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

abb abba abbabba

Critical pair: abbb=bbba.

Flip LHS and RHS.

Defines rule #1.