C2221232323213331311331333133313231333132313331333121313233123112133221   >>    C222123232321333131133133313331323133313231333133312131323312311213322   <<    C2221232323213331311331333133313231333132313331333121313233123112133223   >>      C2221232323213331311331333133313231333132313331333121313233123112133222   >>