Certificate for #13212 ⟨a, b | abb=aba, bab=ba

Completion settings:

[1] abb=aba

Axiom: abb=aba.

Defines rule #1.

Referenced by [3].

[2] bab=ba

Axiom: bab=ba.

Defines rule #3.

Referenced by [3].

[3] baa=ba

Overlap of [2] bab=ba with [1] abb=aba:

b ab abb

Critical pair: baba=bab.

Reduce LHS:

[2](bab)a
baa

Reduce RHS:

[2](bab)
ba

Defines rule #2.