Certificate for #16491 ⟨a, b | aab=aa, abb=aaa

Completion settings:

[1] aab=aa

Axiom: aab=aa.

Defines rule #1.

Referenced by [3].

[2] abb=aaa

Axiom: abb=aaa.

Defines rule #2.

Referenced by [3].

[3] aaaa=aa

Overlap of [1] aab=aa with [2] abb=aaa:

a ab abb

Critical pair: aaaa=aab.

Reduce RHS:

[1](aab)
aa

Defines rule #3.