Certificate for #16527 ⟨a, b | aba=aa, abb=aba

Completion settings:

[1] aba=aa

Axiom: aba=aa.

Defines rule #1.

Referenced by [2].

[2] abb=aa

Axiom: abb=aba.

Reduce RHS:

[1](aba)
aa

Defines rule #2.