C2221232323213331311331333133313231333132313331333121313232311233231321   >>    C222123232321333131133133313331323133313231333133312131323231123323132   <<    C2221232323213331311331333133313231333132313331333121313232311233231323   >>      C2221232323213331311331333133313231333132313331333121313232311233231322   >>