def post_process_human_data(human_data):
    """Remove unwanted space and solves double shad(ཉིས་ཤད་) split cases

    Args:
        human_data (str): human segmented data

    Returns:
        str: clean human segmented data
    """
    human_data = human_data.replace('།  །', '།།')
    human_data = human_data.replace('  ', ' ')
    return human_data