C2221232323213331311331333133313231333132313232222121223213332211   >>    C222123232321333131133133313331323133313231323222212122321333221   <<    C2221232323213331311331333133313231333132313232222121223213332213   >>      C2221232323213331311331333133313231333132313232222121223213332212   >>