C2221232323213331311331333133313331323132313222212312122122332221   >>    C222123232321333131133133313331333132313231322221231212212233222   <<    C2221232323213331311331333133313331323132313222212312122122332223   >>      C2221232323213331311331333133313331323132313222212312122122332222   >>