C2221232323213331311331333133313331323132313331333213233121131221   >>    C222123232321333131133133313331333132313231333133321323312113122   <<    C2221232323213331311331333133313331323132313331333213233121131223   >>      C2221232323213331311331333133313331323132313331333213233121131222   >>