'Attach conjunctions.
CC-words like "and" and "or" between two chunks indicate a conjunction.'

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)
