a-ak a-do a-ok aaaa aaac aaad aaae aaca aacc aacd aace aack aaco aada aadc aade aaea aaec aaka aake aaoe aaoo acaa acac acad acae acca accc accd acce acco acda acdc acde ace- acea acec aced acek ackd acke acoa acod acoe adaa adac adad adae adak adao adcc adda addc addd adde addo adea adee adeo adoc adod adoe adok adoo aeac aede aeka akaa akae akao akca aked akee akka akko akok aoca aoce c-cd caaa caac cac- caca cacc cace cack caco cada cadc cadd cade cado caec caka cake caod ccaa ccac ccad ccca cccc ccdc cced ccee ccoc ccod cd-e cdaa cdac cdad cdda cdec ceac cead cec- ceca cece ceco ceda cedd cede cedo ceec ceke ckac ckck ckco ckdo ckoa ckoc ckoo coad coak coca coce cock coco coda codd code coed cok- coka coke coko cood cook daad daae daca dace dada dade dado daka dake dako dcca dccc dddd ddoc deac dead deae deak dec- deca decc decd dece deck deco deda dedd dede dedo deed deek dek- deka deke dkdc doae doak doca doce dock doco dod- doda dodd dode dodo doea doek doka doke doko dood dook eaca eacc eada eadd eaec ecaa ecac ecad ecao ecca eccc ecce ecco ecdc eced ecka ecko eco- ecod edac edad edca edda eddc edde eddo ede- edea edoc edod eeca eede eeea eeee eeka eeke eeoc eka- ekco eked ekek ekka ekoa eocd eode eoka kaaa kaak kacc kacd kace kaco kad- kada kadd kade kado kaeo kaka kakc kake kakk kako kaoa kaoc kaok kcaa kcac kcad kcca kccc kccd kcck kcda kcdc kcdd kcea kcec kced kcee kceo kckc kckk kcko kcoe kdaa kdac kdad kdae kdak kdao kdca kdcc kdcd kdce kdco kddc kddd kddk kdec kdka kdkd kdkk kdko kdoc kdoe kdok kea- kead keak keca keck keco keda kedc kedd kede kedo keed keek keka kekc keke keko keok kkaa kkac kkcd kkck kkco kkda kkdc kkdd kkdo kkea kked kkkk kkoa kkoo koac koae koak koca kocd kock koda kode kodk kodo koea koed koka kokc koke kokk koko kooc kook kooo o-eo oade oake ocac ocad ocak occa occc oce oced ocee ocke odac odda oddd odea oded odeo odoo oec- oeca oecc oedo oeec okak oked okka okko okok ooaa ooak ooda oooo