-er a-a aaa aad aae aaf aag aak aao aar aas ad- ada add ade adf adg adk ado adr ads aea aed aee aef aeg aek aeo aer aes af- afa afd afe aff afg afk afo afr afs ag- aga agd age agf agg agk ago agr ags aka akd ake akg akk ako akr aks aoa aod aoe aof aog aok aoo aor aos ar- ara ard are arf arg ark aro arr ars as- asa asd ase asf asg ask aso asr ass daa dad dae daf dag dak dao dar das dda ddd dde ddf ddg ddk ddo ddr dds de- dea ded dee def deg dek deo der des dfa dfd dfe dff dfg dfk dfo dfr dfs dga dgd dge dgf dgg dgk dgr dgs dka dke dkg dkk dko dkr dks doa dod doe dof dog dok doo dor dos dra drd dre drg drk dro drr drs dsa dsd dse dsf dsg dsk dso dsr dss eaa ead eae eaf eag eak eao ear eas ed- eda edd ede edf edg edk edo edr eds eea eed eee eef eeg eek eeo eer ees ef- efa efd efe eff efg efo efr efs ega egd ege egf egg ego egr egs eka ekd eke ekf ekg eko ekr eks eo- eoa eod eoe eof eog eok eoo eor eos era erd ere erf erg erk ero err ers es- esa esd ese esf esg esk eso esr ess faa fad fae faf fag fak fao far fas fda fdd fde fdf fdg fdk fdo fdr fds fea fed fee fef feg fek feo fer fes ffa ffd ffe fff ffg ffk ffo ffr ffs fga fgd fge fgf fgg fgr fgs fka fkf fkg fkk foa foe fof fog fok foo for fos fra frd fre frf frg frk fro frr frs fsa fsd fse fsf fsg fsk fso fsr fss g-d gaa gad gae gaf gag gak gao gar gas gda gdd gde gdf gdk gdo gdr gds ge- gea ged gee gef geg gek geo ger ges gfa gfd gfe gff gfk gfo gfr gfs gga ggd ggg ggo ggr ggs gka gkd gko gks goa god goe gof gog gok goo gor gos gra grd gre grf grg grk gro grr grs gsa gsd gse gsf gsg gsk gso gsr gss ka- kaa kad kae kaf kag kak kao kar kas kda kde kdf kdg kdk kdo kdr kds ke- kea ked kee kef keg kek keo ker kes kfa kfd kff kfg kfo kfs kga kgd kgf kgo kgs kke kkk kkr kks koa kod koe kof kog kok koo kor kos kra krd krf krg krk kro krr krs ksa ksd kse ksf ksg ksk kso ksr kss oaa oad oae oaf oag oak oao oar oas oda odd ode odf odg odo odr ods oea oed oee oef oeg oeo oer oes of- ofa ofd ofe off ofg ofo ofr ofs oga ogd oge ogf ogg ogo ogs oka okd oke okg okk oko okr oks oo- ooa ood oof oog ook ooo oor oos or- ora ord ore orf org ork oro orr ors os- osa osd ose osf osg osk oso osr oss ra- raa rad rae raf rag rak rao rar ras rda rdd rde rdf rdg rdo rdr rds re- rea red ree ref reg rek reo rer res rfa rfd rfe rff rfg rfk rfo rfr rfs rga rgd rge rgf rgg rgk rgo rgr rgs rke rkf rkg rkk rko rks roa rod roe rof rog rok roo ror ros rra rrd rrf rrg rrk rrr rrs rsa rsd rse rsf rsg rsk rso rsr rss saa sad sae saf sag sak sao sar sas sda sdd sde sdf sdg sdk sdo sdr sds se- sea sed see sef seg sek seo ser ses sfa sfd sfe sff sfg sfk sfo sfr sfs sga sgd sge sgf sgg sgk sgo sgr sgs sk- ska skd ske skf skg skk sko skr sks soa sod soe sof sog sok soo sor sos sr- sra srd sre srf srg srk sro srr srs ss- ssa ssd sse ssf ssg ssk sso ssr sss