C2221232323213331311331333133313231333132313232222121223323111121   >>    C222123232321333131133133313331323133313231323222212122332311112   <<    C2221232323213331311331333133313231333132313232222121223323111123   >>      C2221232323213331311331333133313231333132313232222121223323111122   >>