from monoid import is_Monoid
from free_monoid import FreeMonoid, is_FreeMonoid
from string_monoid import (BinaryStrings, OctalStrings, HexadecimalStrings,
Radix64Strings, AlphabeticStrings)
from free_abelian_monoid import FreeAbelianMonoid, is_FreeAbelianMonoid
from free_monoid_element import is_FreeMonoidElement
from string_ops import (
strip_encoding,
frequency_distribution,
coincidence_index,
coincidence_discriminant)
from string_monoid_element import (
is_BinaryStringMonoidElement,
is_OctalStringMonoidElement,
is_HexadecimalStringMonoidElement,
is_Radix64StringMonoidElement)
from free_abelian_monoid_element import is_FreeAbelianMonoidElement
