C2221232323213331311331333133313231333132313331333121313233123112311211   >>    C222123232321333131133133313331323133313231333133312131323312311231121   <<    C2221232323213331311331333133313231333132313331333121313233123112311213   >>      C2221232323213331311331333133313231333132313331333121313233123112311212   >>