a-ak a-ok aaaa aaac aaae aaar aaca aacc aace aack aaco aacr aaea aaec aaka aake aaoe aaoo aara aarc aare aaro acaa acac acae acar acca accc acce acco ace- acea acec acek acer acke acoa acoe acor acr- acra acrc acre acro acrr aeac aeer aeka aer- aera aerc aero akaa akae akao akar akca akee aker akka akko akok akr- akra akre aoca aoce aora arac arae arak arar arc- arca arce arco area arec aree arek areo arka arke arko aroa aroe aroo aror arr- arra arrc arre arrk arro arrr caaa caac cac- caca cacc cace cack caco cacr caec caer caka cake caor cara carc care cark caro carr ccaa ccac ccar ccca cccc ccee ccoc ccra ccrc ccre ceac cear cec- ceca cece ceco ceec ceke ceor cer- cera cerc cere cero ckac ckck ckco cker ckoa ckoc ckoo ckor ckrc coak coca coce cock coco cok- coka coke coko cook cor- cora corc core cork coro corr crac crar crca crcc crce crcr cre- crea crec cree creo crkc croc croe crok croo cror eaca eacc eaec eara eare earo ecaa ecac ecao ecar ecca eccc ecce ecco ecka ecko eco- ecra ecrc ecrr eeca eeea eeee eeka eeke eeoc eera eerc eero eka- ekco ekek eker ekka ekoa eoka eora eore erca ercc erce erec erer erke eroc eroe eroo erra errc erre erro kaaa kaak kaar kacc kace kaco kaeo kaer kaka kakc kake kakk kako kaoa kaoc kaok kaor kara kare kark karo karr kcaa kcac kcar kcca kccc kcck kccr kcea kcec kcee kceo kckc kckk kcko kckr kcoe kcor kcrc kcro kcrr kea- keak kear keca keck keco kecr keek keer keka kekc keke keko keok ker- kera kerc kere kerk kero kerr kkaa kkac kkar kkck kkco kkcr kkea kkkk kkoa kkoo kkor kkrc kkre kkrk kkro kkrr koac koae koak koar koca kock koea koka kokc koke kokk koko kokr kooc kook kooo koor kora korc kore kork koro korr krac krae krak krar krca krcc krce krco krea krec kree krek kreo krka krkc krke krkk krko krkr kroa kroc kroe krok kroo kror krrc krre krrk krro krrr o-eo oaer oake oara oare ocac ocak occa occc oce ocee ocke ocra ocre ocro ocrr oec- oeca oecc oeec oera oere okak oker okka okko okok okor okra okre okro ooaa ooak oocr ooer oooo oora oore orac orae orak orao orar orca orce orco ore- orea orec orek oreo orer orka orke orko oro- oroe orok oror orra orro raak rac- raca racc race rack raco raec raer raka rake rakk raoc raok rara rare rark raro rcac rccc rea- reac reae reak reao rear reca recc rece reck recr reek reka reke reko rera rere rero roak roar roca rocc roce rock roco roea roer roka roke rokk roko rokr rook roor rora rorc rore rork roro rrrr