C2221232323213331311331333133313231333132313331333121313232313211233131   >>    C222123232321333131133133313331323133313231333133312131323231321123313   <<    C2221232323213331311331333133313231333132313331333121313232313211233133   >>      C2221232323213331311331333133313231333132313331333121313232313211233132   >>