C2221232323213331311331333133313231333132313331333121313232221222132311   >>    C222123232321333131133133313331323133313231333133312131323222122213231   <<    C2221232323213331311331333133313231333132313331333121313232221222132313   >>      C2221232323213331311331333133313231333132313331333121313232221222132312   >>