C2221232323213331311331333133313231333132333112323132332323213223312121   >>    C222123232321333131133133313331323133313233311232313233232321322331212   <<    C2221232323213331311331333133313231333132333112323132332323213223312123   >>      C2221232323213331311331333133313231333132333112323132332323213223312122   >>