-er a-a a-c aaa aac aae aaf aag aak aao aar ac- aca acc ace acf acg ack aco acr aea aec aee aef aeg aek aeo aer af- afa afc afe aff afg afk afo afr ag- aga agc age agf agg agk ago agr aka akc ake akg akk ako akr aoa aoc aoe aof aog aok aoo aor ar- ara arc are arf arg ark aro arr c-- caa cac cae caf cag cak cao car cca ccc cce ccf ccg cck cco ccr ce- cea cec cee cef ceg cek ceo cer cfa cfc cfe cff cfg cfk cfo cfr cga cgc cge cgg cgo cgr cka ckc cko co- coa coc coe cof cog cok coo cor cra crc cre crf crg crk cro crr eaa eac eae eaf eag eak eao ear ec- eca ecc ece ecf ecg eck eco ecr eea eec eee eef eeg eek eeo eer ef- efa efc efe eff efg efo efr ega egc ege egf egg ego egr eka ekc eke ekf ekg eko ekr eo- eoa eoc eoe eof eog eok eoo eor era erc ere erf erg erk ero err faa fac fae faf fag fak fao far fca fcc fce fcf fcg fck fco fcr fea fec fee fef feg fek feo fer ffa ffc ffe fff ffg ffk ffo ffr fga fgc fge fgf fgg fgr fka fkc fkf fkg fkk foa foc foe fof fog fok foo for fra frc fre frf frg frk fro frr gaa gac gae gaf gag gak gao gar gca gcc gce gcf gcg gck gco gcr ge- gea gec gee gef geg gek geo ger gfa gfc gfe gff gfk gfo gfr gga ggc ggg ggo ggr gka gko goa goc goe gof gog gok goo gor gra grc gre grf grg grk gro grr ka- kaa kac kae kaf kag kak kao kar kca kcc kce kcg kck kcr ke- kea kec kee kef keg kek keo ker kfa kfc kff kfg kfo kga kgc kgf kgo kkc kke kkk kkr koa koc koe kof kog kok koo kor kra krc krf krg krk kro krr oaa oac oae oaf oag oak oao oar oc- oca occ ocf ocg ock oco ocr oea oec oee oef oeg oeo oer of- ofa ofc ofe off ofg ofo ofr oga ogc oge ogf ogg ogo oka okc oke okg okk oko okr oo- ooa ooc oof oog ook ooo oor or- ora orc ore orf org ork oro orr ra- raa rac rae raf rag rak rao rar rca rcc rce rcf rcg rco rcr re- rea rec ree ref reg rek reo rer rfa rfc rfe rff rfg rfk rfo rfr rga rgc rge rgf rgg rgk rgo rgr rkc rke rkf rkg rkk rko roa roc roe rof rog rok roo ror rra rrc rrf rrg rrk rrr

a-ak a-ok aaaa aaac aaae aaaf aaar aaca aacc aace aacf aack aaco aacr aaea aaec aafa aafc aaff aage aaka aake aaoe aaoo aara aarc aare aaro acaa acac acae acag acar acca accc acce accf acco ace- acea acec acek acer acfc acfe acga acgr acke acoa acoe acog acor acr- acra acrc acre acro acrr aeac aeaf aeer aega aeka aer- aera aerc aero afaa afak afao afar afca afcc afee afek afer affa affc affo afgf afka afkr afoa afoe afog afoo afor afr- afra afrc afre afro ag-o agac agag agao agar agca agcc agce agco agea agee ager agfa agga agge agog agoo agra agre agro akaa akae akao akar akca akee akeg aker akka akko akok akr- akra akre aoca aoce aora arac arae araf arag arak arar arc- arca arce arco area arec aree aref areg arek areo arfa arfc arff arga arge argo arka arke arko aroa aroe aroo aror arr- arra arrc arre arrg arrk arro arrr caaa caac caaf cac- caca cacc cace cack caco cacr caec caer cafa cafc cafe caff caga cage cagg cago cagr caka cake caor cara carc care carf cark caro carr ccaa ccac ccaf ccag ccar ccca cccc cccf ccee ccfa ccfc ccff ccga ccgc ccoc ccra ccrc ccre ccrf ccrg ceac cear cec- ceca cece ceco ceec cef- cefa cefc cege cego ceke ceor cer- cera cerc cere cerf cero cfaa cfac cfae cfao cfar cfca cfcf cfco cffr cfgo cfoa cfor cfra cfre cfrg cgac cgcc cgcg cger cgfc cgro ckac ckck ckco cker ckfr ckga ckgo ckoa ckoc ckoo ckor ckrc coag coak coca coce cock coco cofc cofe coff cogo cok- coka coke coko coof cook cor- cora corc core corf corg cork coro corr crac craf crag crar crca crcc crce crcr cre- crea crec cree creg creo crfc crkc croc croe crok croo cror eaaf eaca eacc eaec eaga eage eara eare earo ecaa ecac ecao ecar ecca eccc ecce ecco ecef ecfa ecfc ecfr ecka ecko eco- ecog ecra ecrc ecrf ecrr eeca eeea eeee eefa eefe eega eeka eeke eeoc eera eerc eerg eero ef-g efca efco efeo effa efke efor egaa egae egao egar egcc egcg egcr egea egec egee eger egfr egge eggo ego- egor egra egre eka- ekco ekek eker ekfc ekka ekoa eoka eora eore eraf erca ercc erce erec erer erfc erg- erga ergg ergo erke eroc eroe eroo erra errc erre erro f--k faaa faac faca facc face fack fafa fafc fafe faff fafg fafo fage fagg fago fake fako fara farc fare farg fark faro farr fcar fcca fccf fcra feaf feak fear fece feck feek feer fefc fefe feff fefo fege fegg feke feko feof fera ferc fere ferk fero ferr ffar ffcc ffee ffff ffrr foaf foak foar foca foce fock foco foer fofo foge fogg fogo foke foof fook for- fora fore forg fork foro forr frac frae frag frak frcc frea free freo frfc froe frog gaar gace gack gaea gaec gaer gafa gafc gaff gaga gage gagg gago gara gare garf