a-do aaaa aaac aaad aaae aaaf aaca aacc aacd aace aacf aaco aada aadc aade aaea aaec aafa aafc aafd aaff aaoe aaoo acaa acac acad acae acca accc accd acce accf acco acda acdc acde acdf ace- acea acec aced acfc acfd acfe acoa acod acoe adaa adac adad adae adao adcc adda addc addd adde addo adea adee adeo adfa adfc adoc adod adoe adoo aeac aeaf aede afaa afad afao afca afcc afdc afee affa affc affo afoa afoe afoo aoca aoce c-cd caaa caac caaf cac- caca cacc cace caco cada cadc cadd cade cado caec cafa cafc cafe caff caod ccaa ccac ccad ccaf ccca cccc cccf ccdc ccdf cced ccee ccfa ccfc ccfd ccff ccoc ccod cd-e cdaa cdac cdad cdda cdec cdef cdfa cdfe ceac cead cec- ceca cece ceco ceda cedd cede cedo ceec cef- cefa cefc cfaa cfac cfae cfao cfca cfcf cfco cfda cfoa coad coca coce coco coda codd code coed cofc cofe coff cood coof daad daae daca dace dada dade dado dafa dafc dafe daff dafo dcca dccc dcfc dddd ddoc deac dead deae deaf dec- deca decc decd dece deco deda dedd dede dedo deed deef defe deff defo dfaf dfcc dfco dffa dfoe doae doca doce doco dod- doda dodd dode dodo doea doff dood doof eaaf eaca eacc eada eadd eaec ecaa ecac ecad ecao ecca eccc ecce ecco ecdc ecdf eced ecef ecfa ecfc eco- ecod edac edad edca edda eddc edde eddo ede- edea edfa edoc edod eeca eede eeea eeee eefa eefe eeoc efca efco efda efeo effa eocd eode faaa faac faad faca facc face fada fadd fade fado fafa fafc fafe faff fafo fcca fccf fcda fdca fdoa fdoc fead feaf fece feda fede feed fefc fefe feff fefo feod feof ffcc ffee ffff foad foaf foca foce foco foda fode foed fofo food foof o-eo oade oafc oafo ocac ocad occa occc oce oced ocee ocef ocfa odac odda oddd odea oded odeo odoo oec- oeca oecc oedo oeec off- offa offc offe offo ooaa ooda ooff oooo