C2221232323213331311331333133313231333132313221323131212123313132121   >>    C222123232321333131133133313331323133313231322132313121212331313212   <<    C2221232323213331311331333133313231333132313221323131212123313132123   >>      C2221232323213331311331333133313231333132313221323131212123313132122   >>