C2221232323213331311331333133313231333132333112323132332323213222223121   >>    C222123232321333131133133313331323133313233311232313233232321322222312   <<    C2221232323213331311331333133313231333132333112323132332323213222223123   >>      C2221232323213331311331333133313231333132333112323132332323213222223122   >>