C2221232323213331311331333133313231333132313232111131121113233121   >>    C222123232321333131133133313331323133313231323211113112111323312   <<    C2221232323213331311331333133313231333132313232111131121113233123   >>      C2221232323213331311331333133313231333132313232111131121113233122   >>