C2221232323213331311331333133313231333132313331333121313232321233231121   >>    C222123232321333131133133313331323133313231333133312131323232123323112   <<    C2221232323213331311331333133313231333132313331333121313232321233231123   >>      C2221232323213331311331333133313231333132313331333121313232321233231122   >>