-er a-a aaa aad aae aaf aag aak aan aar aas ad- ada add ade adf adg adk adn adr ads aea aed aee aef aeg aek aen aer aes af- afa afd afe aff afg afk afn afr afs ag- aga agd age agf agg agk agn agr ags aka akd ake akg akk akn akr aks an- ana and ane anf ang ank ann anr ans ar- ara ard are arf arg ark arn arr ars as- asa asd ase asf asg ask asn asr ass daa dad dae daf dag dak dan dar das dda ddd dde ddf ddg ddk ddn ddr dds de- dea ded dee def deg dek den der des dfa dfd dfe dff dfg dfk dfn dfr dfs dga dgd dge dgf dgg dgk dgn dgr dgs dka dke dkg dkk dkr dks dna dnd dne dnf dng dnk dnn dnr dns dra drd dre drg drk drn drr drs dsa dsd dse dsf dsg dsk dsn dsr dss eaa ead eae eaf eag eak ean ear eas ed- eda edd ede edf edg edk edn edr eds eea eed eee eef eeg eek een eer ees ef- efa efd efe eff efg efr efs ega egd ege egf egg egn egr egs eka ekd eke ekf ekg ekr eks en- ena end ene enf eng enk enn enr ens era erd ere erf erg erk ern err ers es- esa esd ese esf esg esk esn esr ess faa fad fae faf fag fak fan far fas fda fdd fde fdf fdg fdk fdn fdr fds fea fed fee fef feg fek fen fer fes ffa ffd ffe fff ffg ffk ffn ffr ffs fga fgd fge fgf fgg fgn fgr fgs fka fkf fkg fkk fna fnd fne fnf fng fnk fnn fnr fns fra frd fre frf frg frk frn frr frs fsa fsd fse fsf fsg fsk fsn fsr fss g-d gaa gad gae gaf gag gak gan gar gas gda gdd gde gdf gdk gdn gdr gds ge- gea ged gee gef geg gek gen ger ges gfa gfd gfe gff gfk gfr gfs gga ggd ggg ggn ggr ggs gka gkd gkn gks gna gnd gne gnf gnn gnr gns gra grd gre grf grg grk grn grr grs gsa gsd gse gsf gsg gsk gsn gsr gss ka- kaa kad kae kaf kag kak kan kar kas kda kde kdf kdg kdk kdr kds ke- kea ked kee kef keg kek ken ker kes kfa kfd kff kfg kfs kga kgd kgf kgs kke kkk kkn kkr kks kn- kna knd kne knf kng knk knn knr kra krd krf krg krk krn krr krs ksa ksd kse ksf ksg ksk ksn ksr kss naa nad nae naf nag nak nan nar nas nda ndd nde ndf ndg ndk ndn ndr nds ne- nea ned nee nef neg nek nen ner nes nfa nfd nfe nff nfk nfn nfr nfs nga ngd nge ngf ngg ngk ngn ngs nka nke nkf nkk nkn nkr nks nna nne nnf nng nnk nnn nns nra nrd nre nrf nrg nrk nrn nrr nrs nsa nsd nse nsf nsg nsk nsn nsr nss ra- raa rad rae raf rag rak ran rar ras rda rdd rde rdf rdg rdn rdr rds re- rea red ree ref reg rek ren rer res rfa rfd rfe rff rfg rfk rfn rfr rfs rga rgd rge rgf rgg rgk rgn rgr rgs rke rkf rkg rkk rks rna rnd rng rnn rnr rns rra rrd rrf rrg rrk rrn rrr rrs rsa rsd rse rsf rsg rsk rsn rsr rss saa sad sae saf sag sak san sar sas sda sdd sde sdf sdg sdk sdn sdr sds se- sea sed see sef seg sek sen ser ses sfa sfd sfe sff sfg sfk sfn sfr sfs sga sgd sge sgf sgg sgk sgn sgr sgs sk- ska skd ske skf skg skk skr sks sna snd sne snf sng snk snn snr sns sr- sra srd sre srf srg srk srn srr srs ss- ssa ssd sse ssf ssg ssk ssn ssr sss