C2221232323213331311331333133313231333132313221323131212222123233311   >>    C222123232321333131133133313331323133313231322132313121222212323331   <<    C2221232323213331311331333133313231333132313221323131212222123233313   >>      C2221232323213331311331333133313231333132313221323131212222123233312   >>