C2221232323213331311331333133313331323132313331333231133313323221   >>    C222123232321333131133133313331333132313231333133323113331332322   <<    C2221232323213331311331333133313331323132313331333231133313323223   >>      C2221232323213331311331333133313331323132313331333231133313323222   >>