C1111233131211111211113313331333133313331322322331323131133131212113121   >>    C111123313121111121111331333133313331333132232233132313113313121211312   <<    C1111233131211111211113313331333133313331322322331323131133131212113123   >>      C1111233131211111211113313331333133313331322322331323131133131212113122   >>