Certificate for #15573 ⟨a, b | aab=aa, abbba=a

Completion settings:

[1] aab=aa

Axiom: aab=aa.

Defines rule #2.

Referenced by [3].

[2] abbba=a

Axiom: abbba=a.

Defines rule #3.

Referenced by [3].

[3] aaa=aa

Overlap of [1] aab=aa with [2] abbba=a:

a ab abbba

Critical pair: aa=aabba.

Reduce RHS:

[1](aab)ba
[1](aab)a
aaa

Flip LHS and RHS.

Defines rule #1.