C2221232323213331311331333133313231333132313331333121313232312212133121   >>    C222123232321333131133133313331323133313231333133312131323231221213312   <<    C2221232323213331311331333133313231333132313331333121313232312212133123   >>      C2221232323213331311331333133313231333132313331333121313232312212133122   >>