-er c-- ccc ccd cce ccn ccr ccs ccu cdc cdd cde cdn cdr cds cdu ce- cec ced cee cen cer ces ceu cn- cnc cnd cne cnn cnr cns cnu crc crd cre crn crr crs cru csc csd cse csn csr css csu cuc cud cue cun cur cus cuu dcc dcd dce dcn dcr dcs dcu ddc ddd dde ddn ddr dds ddu de- dec ded dee den der des deu dnc dnd dne dnn dnr dns drc drd dre drn drr drs dru dsc dsd dse dsn dsr dss dsu duc dud due dun dur dus ec- ecc ecd ece ecn ecr ecs ecu ed- edc edd ede edn edr eds edu eec eed eee een eer ees en- enc end ene enn enr ens enu erc erd ere ern err ers eru es- esc esd ese esn esr ess esu eu- euc eud eue eun eur eus ncc ncd nce ncn ncr ncs ncu ndc ndd nde ndn ndr nds ndu ne- nec ned nee nen ner nes neu nnc nne nnn nns nnu nrc nrd nre nrn nrr nrs nru nsc nsd nse nsn nsr nss nsu nuc nud nue nun nur nus nuu rcc rcd rce rcn rcr rcs rcu rdc rdd rde rdn rdr rds rdu re- rec red ree ren rer res reu rnc rnd rnn rnr rns rnu rrc rrd rrn rrr rrs rru rsc rsd rse rsn rsr rss rsu ruc rud rue run rur rus ruu scc scd sce scn scr scs scu sdc sdd sde sdn sdr sds sdu se- sec sed see sen ser ses seu snc snd sne snn snr sns snu sr- src srd sre srn srr srs ss- ssc ssd sse ssn ssr sss ssu suc sud sue sun sur sus suu ucc ucd uce ucn ucr ucs ucu udc udd ude udn udr uds udu uec ued uee uen uer ues un- unc und une unn unr uns unu ur- urc urd ure urn urr urs uru usc usd use usn usr uss usu uuc uue uun uur uus uuu