-er a-a a-c aaa aac aad aae aaf aag aar aas aau ac- aca acc acd ace acf acg acr acs acu ad- ada adc add ade adf adg adr ads adu aea aec aed aee aef aeg aer aes aeu af- afa afc afd afe aff afg afr afs afu ag- aga agc agd age agf agg agr ags agu ar- ara arc ard are arf arg arr ars aru as- asa asc asd ase asf asg asr ass asu au- aua auc aud aue auf aug aur aus c-- caa cac cad cae caf cag car cas cau cca ccc ccd cce ccf ccg ccr ccs ccu cda cdc cdd cde cdf cdg cdr cds cdu ce- cea cec ced cee cef ceg cer ces ceu cfa cfc cfd cfe cff cfg cfr cfs cfu cga cgc cgd cge cgg cgr cgs cgu cra crc crd cre crf crg crr crs cru csa csc csd cse csf csg csr css csu cua cuc cud cue cuf cug cur cus cuu daa dac dad dae daf dag dar das dau dca dcc dcd dce dcf dcg dcr dcs dcu dda ddc ddd dde ddf ddg ddr dds ddu de- dea dec ded dee def deg der des deu dfa dfc dfd dfe dff dfg dfr dfs dfu dga dgc dgd dge dgf dgg dgr dgs dgu dra drc drd dre drg drr drs dru dsa dsc dsd dse dsf dsg dsr dss dsu dua duc dud due duf dug dur dus eaa eac ead eae eaf eag ear eas eau ec- eca ecc ecd ece ecf ecg ecr ecs ecu ed- eda edc edd ede edf edg edr eds edu eea eec eed eee eef eeg eer ees ef- efa efc efd efe eff efg efr efs ega egc egd ege egf egg egr egs egu era erc erd ere erf erg err ers eru es- esa esc esd ese esf esg esr ess esu eu- eua euc eud eue euf eug eur eus faa fac fad fae faf fag far fas fau fca fcc fcd fce fcf fcg fcr fcs fcu fda fdc fdd fde fdf fdg fdr fds fdu fea fec fed fee fef feg fer fes feu ffa ffc ffd ffe fff ffg ffr ffs ffu fga fgc fgd fge fgf fgg fgr fgs fra frc frd fre frf frg frr frs fru fsa fsc fsd fse fsf fsg fsr fss fsu fua fud fue fuf fug fur fus fuu g-d gaa gac gad gae gaf gag gar gas gau gca gcc gcd gce gcf gcg gcr gcs gcu gda gdc gdd gde gdf gdr gds gdu ge- gea gec ged gee gef geg ger ges geu gfa gfc gfd gfe gff gfr gfs gga ggc ggd ggg ggr ggs ggu gra grc grd gre grf grg grr grs gru gsa gsc gsd gse gsf gsg gsr gss gsu gu- gua guc gud gue guf gug gur gus guu ra- raa rac rad rae raf rag rar ras rau rca rcc rcd rce rcf rcg rcr rcs rcu rda rdc rdd rde rdf rdg rdr rds rdu re- rea rec red ree ref reg rer res reu rfa rfc rfd rfe rff rfg rfr rfs rfu rga rgc rgd rge rgf rgg rgr rgs rra rrc rrd rrf rrg rrr rrs rru rsa rsc rsd rse rsf rsg rsr rss rsu rua ruc rud rue ruf rug rur rus ruu saa sac sad sae saf sag sar sas sau sca scc scd sce scf scg scr scs scu sda sdc sdd sde sdf sdg sdr sds sdu se- sea sec sed see sef seg ser ses seu sfa sfc sfd sfe sff sfg sfr sfs sfu sga sgc sgd sge sgf sgg sgr sgs sgu sr- sra src srd sre srf srg srr srs ss- ssa ssc ssd sse ssf ssg ssr sss ssu sua suc sud sue suf sug sur sus suu ua- uaa uac uad uae uaf uag uar uas uau uca ucc ucd uce ucf ucg ucr ucs ucu uda udc udd ude udf udg udr uds udu uea uec ued uee uef ueg uer ues ufa ufc ufd ufe uff ufg ufr ufs ufu uga ugc uge ugf ugg ugr ugs ugu ur- ura urc urd ure urf urg urr urs uru usa usc usd use usf usg usr uss usu uua uuc uue uug uur uus uuu