C2221232323213331311331333133313231333132313331313311313312123112211   >>    C222123232321333131133133313331323133313231333131331131331212311221   <<    C2221232323213331311331333133313231333132313331313311313312123112213   >>      C2221232323213331311331333133313231333132313331313311313312123112212   >>