C2221232323213331311331333133313231333132313331333121313233312123321   >>    C222123232321333131133133313331323133313231333133312131323331212332   <<    C2221232323213331311331333133313231333132313331333121313233312123323   >>      C2221232323213331311331333133313231333132313331333121313233312123322   >>