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〈
a
,
b
|
ababba
=
bba
〉
Monoid presentation of length 9
Properties
Infinite non-commutative monoid
Completion parameters
Reduction order: left-to-right ac/b
Auxiliary generator
bba=c
Complete rewriting system
abac
⇒
c
b
2
a
⇒
c
b
2
c
⇒
cbac