'A list of rules based on word morphology (prefix, suffix).'

def __init__(self, path='', known={}):

    self.known = known
    self._path = path
    self._cmd = set(('word', 'char', 'haspref', 'hassuf', 'addpref', 'addsuf', 'deletepref', 'deletesuf', 'goodleft', 'goodright'))
    self._cmd.update([('f' + x) for x in self._cmd])
