Certificate for #5030 ⟨a, b, c | ab=c, abccb=1⟩

Completion settings:

[1] c=ab

Axiom: ab=c.

Flip LHS and RHS.

Defines rule #2.

Referenced by [2].

[2] abababb=1

Axiom: abccb=1.

Reduce LHS:

[1]ab(c)cb
[1]⇒ abab(c)b
⇒ abababb

Defines rule #1.