C2221232323213331311331333133313231333132313221323131212123133313211   >>    C222123232321333131133133313331323133313231322132313121212313331321   <<    C2221232323213331311331333133313231333132313221323131212123133313213   >>      C2221232323213331311331333133313231333132313221323131212123133313212   >>