#2621 ⟨a, b | abbaab=abba⟩

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Presentation has sum-of-sides 10
Infinite non-cancellative non-commutative monoid
Not left cancellative, because left multiplication by a is not injective:
- a ⋅ b²a²b = ab²a and a ⋅ b²a = ab²a, however b²a²b ≠ b²a
Enveloping group is isomorphic to ℤ

Format:	Pretty Plain
Word to reduce:
	Tips: Lowercase letters stand for generators. Spaces are ignored. Numbers repeat the previous letter, e.g. `b90`.
Reduction strategy:	Leftmost Rightmost
Path to normal form:	1 1

# ab:abbaab=abba abc abba=c magic:0
cab=c
cba=cc
abba=c
cbba=abbc

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