c-- ccc ccd ccn ccs ccu cdc cdd cdn cds cdu cn- cnc cnd cnn cns cnu csc csd csn css csu cuc cud cun cus cuu dcc dcd dcn dcs dcu ddc ddd ddn dds ddu dnc dnd dnn dns dsc dsd dsn dss dsu duc dud dun dus ncc ncd ncn ncs ncu ndc ndd ndn nds ndu nnc nnn nns nnu nsc nsd nsn nss nsu nuc nud nun nus nuu scc scd scn scs scu sdc sdd sdn sds sdu snc snd snn sns snu ss- ssc ssd ssn sss ssu suc sud sun sus suu ucc ucd ucn ucs ucu udc udd udn uds udu un- unc und unn uns unu usc usd usn uss usu uuc uun uus uuu