C2221232323213331311331333133313231333132313221323131212123312311321   >>    C222123232321333131133133313331323133313231322132313121212331231132   <<    C2221232323213331311331333133313231333132313221323131212123312311323   >>      C2221232323213331311331333133313231333132313221323131212123312311322   >>