'A dictionary of verb infinitives, each linked to a list of conjugated forms.
Each line in the file at the given path is one verb, with the tenses separated by a comma.
The format defines the order of tenses (see TENSES).
The default dictionary defines default tenses for omitted tenses.'

def __init__(self, path='', format=[], default={}, language=None):

    self._path = path
    self._language = language
    self._format = dict(((TENSES_ID[id], i) for (i, id) in enumerate(format)))
    self._default = default
    self._inverse = {}
