def deduplicate_left_right_realisation(left_word, right_word):
    """Remove the right word realisation if it's a duplicate of the left one."""
    if left_word.realisation == 'de' and right_word.realisation in ['de',
        'du', "d'"
        ] or left_word.realisation == 'que' and right_word.realisation in [
        'que', "qu'"]:
        right_word.realisation = None
        return True
