C2221232323213331311331333133313231333132313331333121313232311313113313121   >>    C222123232321333131133133313331323133313231333133312131323231131311331312   <<    C2221232323213331311331333133313231333132313331333121313232311313113313123   >>      C2221232323213331311331333133313231333132313331333121313232311313113313122   >>