C2221232323213331311331333133313231333132313331333121313233121323231211   >>    C222123232321333131133133313331323133313231333133312131323312132323121   <<    C2221232323213331311331333133313231333132313331333121313233121323231213   >>      C2221232323213331311331333133313231333132313331333121313233121323231212   >>