C2221232323213331311331333133313231333132313232222121223133312122311   >>    C222123232321333131133133313331323133313231323222212122313331212231   <<    C2221232323213331311331333133313231333132313232222121223133312122313   >>      C2221232323213331311331333133313231333132313232222121223133312122312   >>