code: def _do_conjunction(self, _and=("and", "e", "en", "et", "und", "y")):
          
          w = self.words
          if len(w) > 2 and w[-2].type == "CC" and w[-2].chunk is None:
              cc  = w[-2].string.lower() in _and and AND or OR
              ch1 = w[-3].chunk
              ch2 = w[-1].chunk
              if ch1 is not None and \
                 ch2 is not None:
                  ch1.conjunctions.append(ch2, cc)
                  ch2.conjunctions.append(ch1, cc)
docs: Attach conjunctions.
              CC-words like "and" and "or" between two chunks indicate a conjunction.