C2221232323213331311331333133313231333132313232222121221322123121   >>    C222123232321333131133133313331323133313231323222212122132212312   <<    C2221232323213331311331333133313231333132313232222121221322123123   >>      C2221232323213331311331333133313231333132313232222121221322123122   >>