-er a-a a-c aaa aac aad aae aag aan aar aas aau ac- aca acc acd ace acg acn acr acs acu ad- ada adc add ade adg adn adr ads adu aea aec aed aee aeg aen aer aes aeu ag- aga agc agd age agg agn agr ags agu an- ana anc and ane ang ann anr ans anu ar- ara arc ard are arg arn arr ars aru as- asa asc asd ase asg asn asr ass asu au- aua auc aud aue aug aun aur aus c-- caa cac cad cae cag can car cas cau cca ccc ccd cce ccg ccn ccr ccs ccu cda cdc cdd cde cdg cdn cdr cds cdu ce- cea cec ced cee ceg cen cer ces ceu cga cgc cgd cge cgg cgn cgr cgs cgu cn- cna cnc cnd cne cng cnn cnr cns cnu cra crc crd cre crg crn crr crs cru csa csc csd cse csg csn csr css csu cua cuc cud cue cug cun cur cus cuu daa dac dad dae dag dan dar das dau dca dcc dcd dce dcg dcn dcr dcs dcu dda ddc ddd dde ddg ddn ddr dds ddu de- dea dec ded dee deg den der des deu dga dgc dgd dge dgg dgn dgr dgs dgu dna dnc dnd dne dng dnn dnr dns dra drc drd dre drg drn drr drs dru dsa dsc dsd dse dsg dsn dsr dss dsu dua duc dud due dug dun dur dus eaa eac ead eae eag ean ear eas eau ec- eca ecc ecd ece ecg ecn ecr ecs ecu ed- eda edc edd ede edg edn edr eds edu eea eec eed eee eeg een eer ees ega egc egd ege egg egn egr egs egu en- ena enc end ene eng enn enr ens enu era erc erd ere erg ern err ers eru es- esa esc esd ese esg esn esr ess esu eu- eua euc eud eue eug eun eur eus g-d gaa gac gad gae gag gan gar gas gau gca gcc gcd gce gcg gcn gcr gcs gcu gda gdc gdd gde gdn gdr gds gdu ge- gea gec ged gee geg gen ger ges geu gga ggc ggd ggg ggn ggr ggs ggu gna gnc gnd gne gnn gnr gns gnu gra grc grd gre grg grn grr grs gru gsa gsc gsd gse gsg gsn gsr gss gsu gu- gua guc gud gue gug gun gur gus guu naa nac nad nae nag nan nar nas nau nca ncc ncd nce ncg ncn ncr ncs ncu nda ndc ndd nde ndg ndn ndr nds ndu ne- nea nec ned nee neg nen ner nes neu nga ngc ngd nge ngg ngn ngs ngu nna nnc nne nng nnn nns nnu nra nrc nrd nre nrg nrn nrr nrs nru nsa nsc nsd nse nsg nsn nsr nss nsu nua nuc nud nue nug nun nur nus nuu ra- raa rac rad rae rag ran rar ras rau rca rcc rcd rce rcg rcn rcr rcs rcu rda rdc rdd rde rdg rdn rdr rds rdu re- rea rec red ree reg ren rer res reu rga rgc rgd rge rgg rgn rgr rgs rna rnc rnd rng rnn rnr rns rnu rra rrc rrd rrg rrn rrr rrs rru rsa rsc rsd rse rsg rsn rsr rss rsu rua ruc rud rue rug run rur rus ruu saa sac sad sae sag san sar sas sau sca scc scd sce scg scn scr scs scu sda sdc sdd sde sdg sdn sdr sds sdu se- sea sec sed see seg sen ser ses seu sga sgc sgd sge sgg sgn sgr sgs sgu sna snc snd sne sng snn snr sns snu sr- sra src srd sre srg srn srr srs ss- ssa ssc ssd sse ssg ssn ssr sss ssu sua suc sud sue sug sun sur sus suu ua- uaa uac uad uae uag uan uar uas uau uca ucc ucd uce ucg ucn ucr ucs ucu uda udc udd ude udg udn udr uds udu uea uec ued uee ueg uen uer ues uga ugc uge ugg ugn ugr ugs ugu un- una unc und une ung unn unr uns unu ur- ura urc urd ure urg urn urr urs uru usa usc usd use usg usn usr uss usu uua uuc uue uug uun uur uus uuu