-er c-- ccc ccd cce cck ccn ccr ccs ccu cdc cdd cde cdk cdn cdr cds cdu ce- cec ced cee cek cen cer ces ceu ckc ckd cks cn- cnc cnd cne cnn cnr cns cnu crc crd cre crk crn crr crs cru csc csd cse csk csn csr css csu cuc cud cue cuk cun cur cus cuu dcc dcd dce dck dcn dcr dcs dcu ddc ddd dde ddk ddn ddr dds ddu de- dec ded dee dek den der des deu dkc dke dkk dkr dks dku dnc dnd dne dnk dnn dnr dns drc drd dre drk drn drr drs dru dsc dsd dse dsk dsn dsr dss dsu duc dud due duk dun dur dus ec- ecc ecd ece eck ecn ecr ecs ecu ed- edc edd ede edk edn edr eds edu eec eed eee eek een eer ees ekc ekd eke ekr eks eku en- enc end ene enk enn enr ens enu erc erd ere erk ern err ers eru es- esc esd ese esk esn esr ess esu eu- euc eud eue eun eur eus kcc kcd kce kck kcn kcr kcs kcu kdc kde kdk kdr kds kdu ke- kec ked kee kek ken ker kes kkc kke kkk kkn kkr kks kku kn- knc knd kne knk knn knr knu krc krd krk krn krr krs kru ksc ksd kse ksk ksn ksr kss ksu kuc kud kue kuk kun kur kus kuu ncc ncd nce nck ncn ncr ncs ncu ndc ndd nde ndk ndn ndr nds ndu ne- nec ned nee nek nen ner nes neu nkc nke nkk nkn nkr nks nku nnc nne nnk nnn nns nnu nrc nrd nre nrk nrn nrr nrs nru nsc nsd nse nsk nsn nsr nss nsu nuc nud nue nuk nun nur nus nuu rcc rcd rce rcn rcr rcs rcu rdc rdd rde rdn rdr rds rdu re- rec red ree rek ren rer res reu rkc rke rkk rks rku rnc rnd rnn rnr rns rnu rrc rrd rrk rrn rrr rrs rru rsc rsd rse rsk rsn rsr rss rsu ruc rud rue ruk run rur rus ruu scc scd sce sck scn scr scs scu sdc sdd sde sdk sdn sdr sds sdu se- sec sed see sek sen ser ses seu sk- skc skd ske skk skr sks sku snc snd sne snk snn snr sns snu sr- src srd sre srk srn srr srs ss- ssc ssd sse ssk ssn ssr sss ssu suc sud sue suk sun sur sus suu ucc ucd uce uck ucn ucr ucs ucu udc udd ude udk udn udr uds udu uec ued uee uen uer ues ukc uke ukk ukn ukr uku un- unc und une unk unn unr uns unu ur- urc urd ure urk urn urr urs uru usc usd use usk usn usr uss usu uuc uue uun uur uus uuu