C2221232323213331311331333133313231333132313331333121313233313211322311   >>    C222123232321333131133133313331323133313231333133312131323331321132231   <<    C2221232323213331311331333133313231333132313331333121313233313211322313   >>      C2221232323213331311331333133313231333132313331333121313233313211322312   >>