def _ordered_lists(ordered_lines):
    """Given a 4-tuple of ordered *.op file lines, returns a 4-tuple of those
    lines, where each line is converted to a list of elements where appropriate
    """
    h_lines, line_0bt, lines_1bt, lines_2bt = ordered_lines
    h_lists = h_lines[0], h_lines[1].split()
    zbt = line_0bt.split()[1]
    lists_1bt = [line.split() for line in lines_1bt]
    lists_2bt = [line.split() for line in lines_2bt]
    return h_lists, zbt, lists_1bt, lists_2bt