C2221232323213331311331333133313331323132313331333213233121223233231   >>    C222123232321333131133133313331333132313231333133321323312122323323   <<    C2221232323213331311331333133313331323132313331333213233121223233233   >>      C2221232323213331311331333133313331323132313331333213233121223233232   >>