C2221232323213331311331333133313231333132313331333121313233212222321   >>    C222123232321333131133133313331323133313231333133312131323321222232   <<    C2221232323213331311331333133313231333132313331333121313233212222323   >>      C2221232323213331311331333133313231333132313331333121313233212222322   >>