C111112111133131121133133313331333131333132322331333131133133322121   >>    C11111211113313112113313331333133313133313232233133313113313332212   <<    C111112111133131121133133313331333131333132322331333131133133322123   >>      C111112111133131121133133313331333131333132322331333131133133322122   >>