C2221232323213331311331333133313231333132313221323131212222211231   >>    C222123232321333131133133313331323133313231322132313121222221123   <<    C2221232323213331311331333133313231333132313221323131212222211233   >>      C2221232323213331311331333133313231333132313221323131212222211232   >>