C2221232323213331311331333133313231333132333112323132332322222211   >>    C222123232321333131133133313331323133313233311232313233232222221   <<    C2221232323213331311331333133313231333132333112323132332322222213   >>      C2221232323213331311331333133313231333132333112323132332322222212   >>