-er a-a a-c a-t aaa aac aae aak aao aar aat ac- aca acc ace ack aco acr act aea aec aee aek aeo aer aet aka akc ake akk ako akr aoa aoc aoe aok aoo aor aot ar- ara arc are ark aro arr art at- ata atc ate ato atr att c-- caa cac cae cak cao car cat cca ccc cce cck cco ccr cct ce- cea cec cee cek ceo cer cet cka ckc cko ckt co- coa coc coe cok coo cor cot cra crc cre crk cro crr crt cta ctc cte ctk cto ctr ctt eaa eac eae eak eao ear eat ec- eca ecc ece eck eco ecr ect eea eec eee eek eeo eer eet eka ekc eke eko ekr ekt eo- eoa eoc eoe eok eoo eor eot era erc ere erk ero err ert eta etc ete etk eto etr ett k-t ka- kaa kac kae kak kao kar kat kca kcc kce kck kcr kct ke- kea kec kee kek keo ker ket kkc kke kkk kkr kkt koa koc koe kok koo kor kot kra krc krk kro krr krt kta ktc kte ktk kto ktr ktt oaa oac oae oak oao oar oat oc- oca occ ock oco ocr oct oea oec oee oeo oer oet oka okc oke okk oko okr oo- ooa ooc ook ooo oor oot or- ora orc ore ork oro orr ort ot- ota otc ote otk oto otr ott ra- raa rac rae rak rao rar rat rca rcc rce rco rcr rct re- rea rec ree rek reo rer ret rkc rke rkk rko rkt roa roc roe rok roo ror rot rra rrc rrk rrr rrt rta rtc rte rtk rto rtr rtt taa tac tae tak tao tar tat tca tcc tce tck tco tcr tct te- tea tec tee tek teo ter tet tka tkc tke tkk tko tkr tkt to- toa toc toe tok too tor tot tra trc tre trk tro trr trt tta ttc tte ttk tto ttr ttt

a-ak a-ok aaaa aaac aaae aaar aaca aacc aace aack aaco aacr aact aaea aaec aaka aake aaoe aaoo aara aarc aare aaro aart aata aatc aatk aatt ac-t acaa acac acae acar acat acca accc acce acco acct ace- acea acec acek acer acet acke acoa acoe acor acot acr- acra acrc acre acro acrr acta actc acte acto actt aeac aect aeer aeka aer- aera aerc aero aeta aetc aeto aetr aett akaa akae akao akar akca akee aker akka akko akok akot akr- akra akre akte aoca aoce aora aort aotc arac arae arak arar arat arc- arca arce arco arct area arec aree arek areo aret arka arke arko aroa aroe aroo aror arr- arra arrc arre arrk arro arrr arrt arta artc arte arto artr at-t ataa atac atae atak atar atat atca atcc atck atco atcr atea atec atee ateo ater atka atkt atoc atoe atok ator atot atra atrc atre atrk atro atta atte atto attr caaa caac caat cac- caca cacc cace cack caco cacr caec caer caka cake caor cara carc care cark caro carr cart cat- cata catc cate cato catt ccaa ccac ccar ccat ccca cccc ccee ccoc ccra ccrc ccre ccrt cctc cctt ceac cear ceat cec- ceca cece ceco cect ceec ceke ceor cer- cera cerc cere cero cert cet- ceta cete ceto ckac ckat ckck ckco cker ckoa ckoc ckoo ckor ckot ckrc coak coat coca coce cock coco coct cok- coka coke coko cook coot cor- cora corc core cork coro corr cort cota cotc cote coto cott crac crar crat crca crcc crce crcr cre- crea crec cree creo cret crkc croc croe crok croo cror crot crrt crtc ctae ctca ctec ctor ctot ctrc ctta eaca eacc eaec eara eare earo eart eata eate ecaa ecac ecao ecar ecat ecca eccc ecce ecco ecct ecka ecko eco- ecot ecra ecrc ecrr ect- ecta ectc ecto eeca eeea eeee eeka eeke eeoc eera eerc eero eeta eetc eete eka- ekco ekek eker eket ekka ekoa ekta eoka eora eore eota eotc eoto erat erca ercc erce erec erer eret erke eroc eroe eroo erra errc erre erro erta etak etat etcc etco etec etee eter etka etoe etok etra etre etro etta ette etto kaaa kaak kaar kaat kacc kace kaco kact kaeo kaer kaet kaka kakc kake kakk kako kakt kaoa kaoc kaok kaor kara kare kark karo karr kart kat- kata katc kate katk kato katr katt kcaa kcac kcar kcat kcca kccc kcck kccr kcct kcea kcec kcee kceo kcet kckc kckk kcko kckr kcoe kcor kcot kcrc kcro kcrr kcrt kcta kctc kcte kcto kea- keak kear keat keca keck keco kecr keek keer keet keka kekc keke keko keok ker- kera kerc kere kerk kero kerr kert ket- keta ketc kete ketk keto ketr kett kkaa kkac kkar kkat kkck kkco kkcr kkct kkea kkkk kkoa kkoo kkor kkot kkrc kkre kkrk kkro kkrr kkrt kktc kktk koac koae koak koar koca kock koct koea koka kokc koke kokk koko kokr kooc kook kooo koor koot kora korc kore kork koro korr kort kota kotc kote kotk koto kotr kott krac krae krak krar krat krca krcc krce krco krea krec kree krek kreo kret krka krkc krke krkk krko krkr kroa kroc kroe krok kroo kror krrc krre krrk krro krrr krrt krta krtc krtk krto krtr ktaa ktae ktak ktao ktar ktat ktcc ktce ktck ktco ktcr ktea ktec ktee ktek ktkc ktke ktkk ktko ktkr ktkt ktoc ktoe ktok ktoo ktor ktot ktrc ktre ktrk ktro ktrr ktrt kttc kttk ktto kttr kttt o-eo oaer oake oara oare oate ocac ocak ocat occa occc occt oce ocee ocet ocke ocra ocre ocro ocrr oct- octa octe octo oec- oeca oecc oeec oera oere oeta okak oker oket okka okko okok okor okot okra okre okro okta okto ooaa ooak