code: def similar_item_values(self, key, replaces):
          
          return self._similar_item_values(0, key, self.dct.ROOT, replaces)
docs: Returns a list of values for all variants of the ``key``
          in this DAWG according to ``replaces``.
  
          ``replaces`` is an object obtained from
          ``DAWG.compile_replaces(mapping)`` where mapping is a dict
          that maps single-char unicode sitrings to another single-char
          unicode strings.