sage.monoids
sage.monoids.automatic_semigroup
sage.monoids.free_abelian_monoid
sage.monoids.free_abelian_monoid_element
sage.monoids.free_monoid
sage.monoids.free_monoid_element
sage.monoids.hecke_monoid
sage.monoids.indexed_free_monoid
sage.monoids.monoid
sage.monoids.string_monoid
sage.monoids.string_monoid_element
sage.monoids.string_ops
sage.monoids.trace_monoid