C2221232323213331311331333133313331323132313331123233213232333221   >>    C222123232321333131133133313331333132313231333112323321323233322   <<    C2221232323213331311331333133313331323132313331123233213232333223   >>      C2221232323213331311331333133313331323132313331123233213232333222   >>