C2221232323213331311331333133313231333132313232313123232211123231   >>    C222123232321333131133133313331323133313231323231312323221112323   <<    C2221232323213331311331333133313231333132313232313123232211123233   >>      C2221232323213331311331333133313231333132313232313123232211123232   >>