C2221232323213331311331333133313231333132313331333121313232311312211   >>    C222123232321333131133133313331323133313231333133312131323231131221   <<    C2221232323213331311331333133313231333132313331333121313232311312213   >>      C2221232323213331311331333133313231333132313331333121313232311312212   >>