C2221232323213331311331333133313231333132313331333322123221112121221   >>    C222123232321333131133133313331323133313231333133332212322111212122   <<    C2221232323213331311331333133313231333132313331333322123221112121223   >>      C2221232323213331311331333133313231333132313331333322123221112121222   >>