C111112111133131121133133313331333131333132322331333131133133313112121   >>    C11111211113313112113313331333133313133313232233133313113313331311212   <<    C111112111133131121133133313331333131333132322331333131133133313112123   >>      C111112111133131121133133313331333131333132322331333131133133313112122   >>