a-fu aaaa aaac aaad aaae aaaf aaar aaca aacc aacd aace aacf aacr aacu aada aadc aade aadu aaea aaec aafa aafc aafd aaff aara aarc aard aare aaru acaa acac acad acae acar acca accc accd acce accf accu acda acdc acde acdf ace- acea acec aced acer acfc acfd acfe acr- acra acrc acre acrr acu- acue acuf acur adaa adac adad adae adar adcc adda addc addd adde addr addu adea adee ader adfa adfc adra adre adua adue adur aeac aeaf aede aeer aer- aera aerc aerd afaa afad afar afca afcc afcu afdc afee afer affa affc afr- afra afrc afre afru afua afud afue arac arad arae araf arar arau arc- arca arce arda ardc arde ardf ardu area arec ared aree aref areu arfa arfc arff arfu arr- arra arrc arre arrr arru arua arud arue auaa auca auce audc aude auer aufc aufe aur- aura aurd aure c-cd caaa caac caaf cac- caca cacc cace cacr cada cadc cadd cade cadr cadu caec caer caeu cafa cafc cafe caff cafu cara carc card care carf carr cauc cauf ccaa ccac ccad ccaf ccar ccca cccc cccf cccu ccdc ccdf ccdr cced ccee ccfa ccfc ccfd ccff ccra ccrc ccre ccrf ccuc cd-e cd-r cdaa cdac cdad cdda cddr cdec cdef cder cdfa cdfe cdre ceac cead cear cec- ceca cece ceda cedd cede cedu ceec cef- cefa cefc cer- cera cerc cerd cere cerf cfaa cfac cfae cfar cfca cfcf cfda cffr cfra cfre crac craf crar crau crca crcc crce crcr crda crdc cre- crea crec cred cree creu crfc crud crue cuau cuca cucc cuce cuda cude cued cuer cufa cufc cuff cura curd cure curf curr daad daae daar daau daca dace dada dade dadu daer daeu dafa dafc dafe daff dara darc dard dare darf darr daru daud daue daur dcca dccc dccu dcfc dcra dddd ddrc ddre deac dead deae deaf dear deau dec- deca decc decd dece deda dedd dede dedu deed deef deer defe deff der- dera derc dere derf derr deua deue deur dfaf dfcc dfcu dfer dffa dfrf draa drac drad draf drar drau drca drda drea dred dree dref drfc drra drua drue druu duaa duad duar duca duce duda dudd dude dudu duer dufc duff dufu dura dure duru duur eaaf eaca eacc eada eadd eaec eara eard eare ecaa ecac ecad ecar ecca eccc ecce ecdc ecdf eced ecef ecfa ecfc ecfr ecra ecrc ecrf ecrr ecru ecua edac edad edar edca edda eddc edde ede- edea eder edfa edfu edra edru educ edur eeca eede eedu eeea eeee eefa eefe eera eerc efca efda effa efua erad eraf erau erca ercc erce erda erde erdf erec ered erer erfc erra errc erre erua eruc erur eucd eude euer eufc eur- eura eurc eure faaa faac faad faca facc face fada fadd fade fafa fafc fafe faff fara farc fard fare farr faru faud faue faur fcar fcca fccf fcda fcra fdca fead feaf fear fece feda fede feed feer fefc fefe feff fera ferc ferd fere ferr feru feud ffar ffcc ffee ffff ffrr frac frad frae frau frcc frea fred free frfc frue fuad fuar fuc- fuca fuda fudd fude fufc fuff fufu fur- fura fure furr raad raaf rac- raca racc race racu rada radc radd rade radr radu raec raed raef raer rafa rafc rafe raff rara rare rarf raua rauc raud raue rauf rcac rcaf rccc rcdc rcde rcfc rcrd rdac rder rdfa rea- reac read reae reaf rear reau reca recc recd rece recr recu reda redc redd rede redr redu reed reef refd refe reff refr refu rera rerd rere reru reue reuf reuu rfae rfef rffc rrad rred rrfc rrrr ruad ruca ruce ruda rudd rude rued ruer rufa rufc rufe ruff rura rurc rurd rure ruru ruud uaca uafa uarc uaru uaua ucad ucar ucca ucdc ucdd ucea ucfa ucrc ucua udaa udad udar udau udca udea uder udra ueda uefa ufcu ufer uffa uffe ufra urac urad urau urca urda urde urdu ure- urea ured urfa urfe urff urra urre urur uuuu