C3123121111331133132313331333133313331333133313331311331311331121   >>    C312312111133113313231333133313331333133313331333131133131133112   <<    C3123121111331133132313331333133313331333133313331311331311331123   >>      C3123121111331133132313331333133313331333133313331311331311331122   >>