C2221232323213331311331333133313331323132313331333112123122132112211111   >>    C222123232321333131133133313331333132313231333133311212312213211221111   <<    C2221232323213331311331333133313331323132313331333112123122132112211113   >>      C2221232323213331311331333133313331323132313331333112123122132112211112   >>