C2221232323213331311331333133313331323132313331333231133313211231   >>    C222123232321333131133133313331333132313231333133323113331321123   <<    C2221232323213331311331333133313331323132313331333231133313211233   >>      C2221232323213331311331333133313331323132313331333231133313211232   >>