fact: Definition free_abmonoid_pr (X : hSet) : monoidfun (free_monoid X) (free_abmonoid X) := presented_monoid_pr _.
imports: UniMath.MoreFoundations.Subtypes UniMath.MoreFoundations.Sets UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.IteratedBinaryOperations UniMath.Combinatorics.Lists