-er a-a a-c aaa aac aad aae aaf aan aar aas aau ac- aca acc acd ace acf acn acr acs acu ad- ada adc add ade adf adn adr ads adu aea aec aed aee aef aen aer aes aeu af- afa afc afd afe aff afn afr afs afu an- ana anc and ane anf ann anr ans anu ar- ara arc ard are arf arn arr ars aru as- asa asc asd ase asf asn asr ass asu au- aua auc aud aue auf aun aur aus c-- caa cac cad cae caf can car cas cau cca ccc ccd cce ccf ccn ccr ccs ccu cda cdc cdd cde cdf cdn cdr cds cdu ce- cea cec ced cee cef cen cer ces ceu cfa cfc cfd cfe cff cfn cfr cfs cfu cn- cna cnc cnd cne cnf cnn cnr cns cnu cra crc crd cre crf crn crr crs cru csa csc csd cse csf csn csr css csu cua cuc cud cue cuf cun cur cus cuu daa dac dad dae daf dan dar das dau dca dcc dcd dce dcf dcn dcr dcs dcu dda ddc ddd dde ddf ddn ddr dds ddu de- dea dec ded dee def den der des deu dfa dfc dfd dfe dff dfn dfr dfs dfu dna dnc dnd dne dnf dnn dnr dns dra drc drd dre drn drr drs dru dsa dsc dsd dse dsf dsn dsr dss dsu dua duc dud due duf dun dur dus eaa eac ead eae eaf ean ear eas eau ec- eca ecc ecd ece ecf ecn ecr ecs ecu ed- eda edc edd ede edf edn edr eds edu eea eec eed eee eef een eer ees ef- efa efc efd efe eff efr efs en- ena enc end ene enf enn enr ens enu era erc erd ere erf ern err ers eru es- esa esc esd ese esf esn esr ess esu eu- eua euc eud eue euf eun eur eus faa fac fad fae faf fan far fas fau fca fcc fcd fce fcf fcn fcr fcs fcu fda fdc fdd fde fdf fdn fdr fds fdu fea fec fed fee fef fen fer fes feu ffa ffc ffd ffe fff ffn ffr ffs ffu fna fnc fnd fne fnf fnn fnr fns fnu fra frc frd fre frf frn frr frs fru fsa fsc fsd fse fsf fsn fsr fss fsu fua fud fue fuf fun fur fus fuu naa nac nad nae naf nan nar nas nau nca ncc ncd nce ncf ncn ncr ncs ncu nda ndc ndd nde ndf ndn ndr nds ndu ne- nea nec ned nee nef nen ner nes neu nfa nfc nfd nfe nff nfn nfr nfs nfu nna nnc nne nnf nnn nns nnu nra nrc nrd nre nrf nrn nrr nrs nru nsa nsc nsd nse nsf nsn nsr nss nsu nua nuc nud nue nun nur nus nuu ra- raa rac rad rae raf ran rar ras rau rca rcc rcd rce rcf rcn rcr rcs rcu rda rdc rdd rde rdf rdn rdr rds rdu re- rea rec red ree ref ren rer res reu rfa rfc rfd rfe rff rfn rfr rfs rfu rna rnc rnd rnn rnr rns rnu rra rrc rrd rrf rrn rrr rrs rru rsa rsc rsd rse rsf rsn rsr rss rsu rua ruc rud rue ruf run rur rus ruu saa sac sad sae saf san sar sas sau sca scc scd sce scf scn scr scs scu sda sdc sdd sde sdf sdn sdr sds sdu se- sea sec sed see sef sen ser ses seu sfa sfc sfd sfe sff sfn sfr sfs sfu sna snc snd sne snf snn snr sns snu sr- sra src srd sre srf srn srr srs ss- ssa ssc ssd sse ssf ssn ssr sss ssu sua suc sud sue suf sun sur sus suu ua- uaa uac uad uae uaf uan uar uas uau uca ucc ucd uce ucf ucn ucr ucs ucu uda udc udd ude udf udn udr uds udu uea uec ued uee uef uen uer ues ufa ufc ufd ufe uff ufn ufr ufs ufu un- una unc und une unf unn unr uns unu ur- ura urc urd ure urf urn urr urs uru usa usc usd use usf usn usr uss usu uua uuc uue uun uur uus uuu