Certificate for #227 ⟨a, b | ababa=aa

Completion settings:

[1] ababa=aa

Axiom: ababa=aa.

Defines rule #2.

Referenced by [2].

[2] abaa=aaba

Overlap of [1] ababa=aa with [1] ababa=aa:

ab aba ababa

Critical pair: abaa=aaba.

Defines rule #1.