C2221232323213331311331333133313331323132313331333112123122132131122212121   >>    C222123232321333131133133313331333132313231333133311212312213213112221212   <<    C2221232323213331311331333133313331323132313331333112123122132131122212123   >>      C2221232323213331311331333133313331323132313331333112123122132131122212122   >>