C2221232323213331311331333133313231333132313331333121313233233121231   >>    C222123232321333131133133313331323133313231333133312131323323312123   <<    C2221232323213331311331333133313231333132313331333121313233233121233   >>      C2221232323213331311331333133313231333132313331333121313233233121232   >>