C2221232323213331311331333133313231333132313331333121313232312322222211   >>    C222123232321333131133133313331323133313231333133312131323231232222221   <<    C2221232323213331311331333133313231333132313331333121313232312322222213   >>      C2221232323213331311331333133313231333132313331333121313232312322222212   >>