C111112111133131121133133313331333133313331323133313331333131133133313211233311   >>    C11111211113313112113313331333133313331333132313331333133313113313331321123331   <<    C111112111133131121133133313331333133313331323133313331333131133133313211233313   >>      C111112111133131121133133313331333133313331323133313331333131133133313211233312   >>