code: def _lemmatise_contractions(self, f, *args, **kwargs):
          
          fd = f
          for contraction, decontraction in self._contractions.items():
              if fd.endswith(contraction):
                  fd = f[:-len(contraction)]
                  if "v" in fd or "V" in fd:
                      fd += decontraction
                  else:
                      fd += deramise(decontraction)
                  yield from self._lemmatise(fd, *args, **kwargs)
docs: Lemmatise un mot f avec sa contraction
  
          :param f: Mot à lemmatiser
          :yield: Match formated like in _lemmatise()