C2221232323213331311331333133313231333132313331333121313233311311232321   >>    C222123232321333131133133313331323133313231333133312131323331131123232   <<    C2221232323213331311331333133313231333132313331333121313233311311232323   >>      C2221232323213331311331333133313231333132313331333121313233311311232322   >>