C2221232323213331311331333133313231333132313232313123232212212221331   >>    C222123232321333131133133313331323133313231323231312323221221222133   <<    C2221232323213331311331333133313231333132313232313123232212212221333   >>      C2221232323213331311331333133313231333132313232313123232212212221332   >>