C2221232323213331311331333133313231333132333112323132332321221231   >>    C222123232321333131133133313331323133313233311232313233232122123   <<    C2221232323213331311331333133313231333132333112323132332321221233   >>      C2221232323213331311331333133313231333132333112323132332321221232   >>