C2221232323213331311331333133313231333132333112323132332323213223233232221   >>    C222123232321333131133133313331323133313233311232313233232321322323323222   <<    C2221232323213331311331333133313231333132333112323132332323213223233232223   >>      C2221232323213331311331333133313231333132333112323132332323213223233232222   >>