C2221232323213331311331333133313231333132313221323131212121133221211   >>    C222123232321333131133133313331323133313231322132313121212113322121   <<    C2221232323213331311331333133313231333132313221323131212121133221213   >>      C2221232323213331311331333133313231333132313221323131212121133221212   >>