C2221232323213331311331333133313231333132313221323131212123223311211   >>    C222123232321333131133133313331323133313231322132313121212322331121   <<    C2221232323213331311331333133313231333132313221323131212123223311213   >>      C2221232323213331311331333133313231333132313221323131212123223311212   >>