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〈
a
,
b
|
ababbaab
=
bb
〉
Monoid presentation of length 10
Properties
Infinite non-commutative monoid
Completion parameters
Reduction order: left-to-right ba
Complete rewriting system
ab(ab
2
)
2
⇒
(b
2
a)
2
ab
abab
2
a
2
b
⇒
b
2