C2221232323213331311331333133313331323133311212322132221331123121   >>    C222123232321333131133133313331333132313331121232213222133112312   <<    C2221232323213331311331333133313331323133311212322132221331123123   >>      C2221232323213331311331333133313331323133311212322132221331123122   >>