C2221232323213331311331333133313231333132333112323132332323223323221   >>    C222123232321333131133133313331323133313233311232313233232322332322   <<    C2221232323213331311331333133313231333132333112323132332323223323223   >>      C2221232323213331311331333133313231333132333112323132332323223323222   >>