Certificate for #5370 ⟨a, b | aab=aa, bba=ab

Completion settings:

[1] aab=aa

Axiom: aab=aa.

Referenced by [3].

[2] ab=bba

Axiom: bba=ab.

Flip LHS and RHS.

Defines rule #1.

Referenced by [3].

[3] bbbbaa=aa

Overlap of [1] aab=aa with [2] ab=bba:

a ab ab

Critical pair: abba=aa.

Reduce LHS:

[2](ab)ba
[2]bb(ab)a
bbbbaa

Defines rule #2.