C2221232323213331311331333133313231333132313232313123232213121313221   >>    C222123232321333131133133313331323133313231323231312323221312131322   <<    C2221232323213331311331333133313231333132313232313123232213121313223   >>      C2221232323213331311331333133313231333132313232313123232213121313222   >>