C2221232323213331311331333133313231333132313232313123232211312223111   >>    C222123232321333131133133313331323133313231323231312323221131222311   <<    C2221232323213331311331333133313231333132313232313123232211312223113   >>      C2221232323213331311331333133313231333132313232313123232211312223112   >>