C111123313121111121111331333133313331312111113331333133313331333131133131223311   >>    C11112331312111112111133133313331333131211111333133313331333133313113313122331   <<    C111123313121111121111331333133313331312111113331333133313331333131133131223313   >>      C111123313121111121111331333133313331312111113331333133313331333131133131223312   >>