C2221232323213331311331333133313331323132313222212333213112323111   >>    C222123232321333131133133313331333132313231322221233321311232311   <<    C2221232323213331311331333133313331323132313222212333213112323113   >>      C2221232323213331311331333133313331323132313222212333213112323112   >>