code: def voice(self, consonant) :
  		'''
  		Voices a consonant, by searching the sound inventory for a consonant having the same
  		features as the argument, but +voice.
  		'''
  		voiced_consonant = deepcopy(consonant)
  		voiced_consonant[Voiced] = Voiced.pos
  		return self._find_sound(voiced_consonantf voice(self, consonant) :
  		'''
  		Voices a consonant, by searching the sound inventory for a consonant having the same
  		features as the argument, but +voice.
  		'''
  		voiced_consonant = deepcopy(consonant)
  		voiced_consonant[Voiced] = Voiced.pos
  		return self._find_sound(voiced_consonant)
docs: Voices a consonant, by searching the sound inventory for a consonant having the same
  		features as the argument, but +voice.