C111112111133131121133133313331333131333132322331333132322331323132232123111   >>    C11111211113313112113313331333133313133313232233133313232233132313223212311   <<    C111112111133131121133133313331333131333132322331333132322331323132232123113   >>      C111112111133131121133133313331333131333132322331333132322331323132232123112   >>