@classmethod
def convert_lines(cls, lines):
    """multiple lines for one entry"""
    new_lines = list()
    for line in lines:
        if line[1] in ['MONTHLY', 'DAILY', 'HOURLY', 'WEEKEND']:
            new_lines.append(line)
        else:
            new_lines[-1] += line[1:]
    for line in new_lines:
        yield cls(*line)
