C2221232323213331311331333133313231333132313331333121313232321223213111   >>    C222123232321333131133133313331323133313231333133312131323232122321311   <<    C2221232323213331311331333133313231333132313331333121313232321223213113   >>      C2221232323213331311331333133313231333132313331333121313232321223213112   >>