C2221232323213331311331333133313231333132313221323131212123313123321   >>    C222123232321333131133133313331323133313231322132313121212331312332   <<    C2221232323213331311331333133313231333132313221323131212123313123323   >>      C2221232323213331311331333133313231333132313221323131212123313123322   >>