C2221232323213331311331333133313231333132323132332323332112323221   >>    C222123232321333131133133313331323133313232313233232333211232322   <<    C2221232323213331311331333133313231333132323132332323332112323223   >>      C2221232323213331311331333133313231333132323132332323332112323222   >>