C2221232323213331311331333133313231333132313331333121313233123221322231   >>    C222123232321333131133133313331323133313231333133312131323312322132223   <<    C2221232323213331311331333133313231333132313331333121313233123221322233   >>      C2221232323213331311331333133313231333132313331333121313233123221322232   >>