a-be a-do a-fu aaaa aaab aaac aaad aaae aaaf aaal aaba aabb aabc aabd aabl aaca aacb aacc aacd aace aacf aacl aaco aacu aada aadc aade aadu aaea aaec aafa aafb aafc aafd aaff aafl aala aalc aald aale aall aalo aalu aaoe aaoo abaa abab abac abad abae abaf abal abau abb- abba abbb abbe abbo abca abcb abcc abcd abcf abcl abda abdo abdu abec abed abee abel abff abla able ablo aboa abob abod abof abol aboo abou abua abud abue abuf abul acaa acab acac acad acae acba acbl acca accc accd acce accf acco accu acda acdb acdc acde acdf ace- acea acec aced acel acfc acfd acfe acfl acla aclc acle aclu acoa acod acoe acol acou acu- acue acuf acul acuo adaa adab adac adad adae adal adao adba adbc adcc adda addc addd adde addl addo addu adea adeb adee adel adeo adfa adfc adfl adle adob adoc adod adoe adoo adua adub adue aeac aeaf aecb aecl aede aela aelc afaa afad afao afca afcb afcc afcu afdb afdc afdl afee afel affa affc affo afla aflc afle afoa afoe afol afoo afua afud afue alaa alac alad alae alal alao alau alb- alba albc albe albo albu alca alcc alce alco ald- alda alde aldl aldo alea alec aled alee alef aleo aleu alfa alfe all- alla alle alll allo allu aloa aloc alod aloe alof alol aloo alou alua aluf aoba aoca aoce aoeu aola aole aouf aoul auaa aube auca auce audc aude audo auel aufc aufe aul- aula auld aule aulf aull aulo aulu auol baaa baad baaf baal baba babb babe babo babu bac- baca bacc bace baco bada badb badd bade bado badu baed bael bafc baff bafo bala balc bald bale balf ball balo balu baol bau- baud bauf baul bbad bbau bbbb bbdd bbdo bbeb bbfc bblb bcaa bcbc bcca bccc bccl bcda bcde bcec bcfc bcof bcuc bdbc bddc bdle bduf bead beaf beal beau beba bebb bebe bebo beca becu beda bede bedl bedo bedu beeb beed beef beel befa befe beff befo bela beld bele bell belo belu beo- beod beof bfca bffl blaa blab blac blad blae blau blcu bldc blea bleb bled blee bleo bleu blfc blob bloc blod bloo blou blub blud blue bluf boab boac boad boal boba bobb bobe bobo bobu boca boce boco bocu boda bodb bode bodo bodu boea boec boee boef boel boeo bofa bofd bofe boff bofu bola bold bole boll bolo bolu boob booc bood booe boof bool boua boud boue bouf boul buad bual buba bubb bube bubo bubu buca bucc buce buco bucu buda budb budd bude budl budo budu buea buel bueu bufc bufe buff bufo bula bulb buld bule bull bulu buol c-bo c-cd caaa caab caac caaf caal caba cabe cabf cabo cabu cac- caca cacc cace caco cada cadc cadd cade cado cadu caec caeu cafa cafb cafc cafe caff cafl cafu cala calc cald cale calf call calo calu caod caol cauc cauf caul cauo cbac cbal cbbc cbca cbcc cbce cbcl cbcu cbdb cbdc cbdo cbea cbec cbee cbef cbfb cbfc cblb cblc cbol ccaa ccab ccac ccad ccaf ccba ccbc ccca cccb cccc cccf cccl cccu ccdc ccdf cced ccee ccel ccfa ccfc ccfd ccff ccfl ccla cclc ccob ccoc ccod ccuc cd-e cdaa cdac cdad cdba cdbf cdda cddb cddl cdec cdef cdfa cdfe ceac cead ceal ceba cebu cec- ceca cece ceco ceda cedd cede cedo cedu ceeb ceec ceel cef- cefa cefc cel- cela celc cele celf cell celo ceol ceou cfaa cfab cfac cfae cfao cfbc cfca cfcb cfcf cfcl cfco cfda cffb cfoa clab clad claf clau clcd cldc clea clec cled clee clef cleo cleu clob clod cloe clof cloo clou club clud clue coad coal coba cobb cobe cobo cobu coca coce coco cocu coda codd code codl coed coel cofc cofe coff col- cola colb cold cole coll colo colu coob cood coof cool coua coub coud coue coul cuau cub- cuba cubb cube cuca cucc cuce cuda cude cued cufa cufc cuff cufo cula culb culc culd cule cull culo d-bo daab daad daae daal daau daba dabb dabo dabu daca dace dada dade dado dadu daeb daeu dafa dafc dafe daff dafo dala dale dalf dall dalo dalu daou daub daud daue dbcc dbfc dbfo dcbc dcca dccb dccc dccl dccu dcdb dcfc dddd ddlc ddoc ddub deac dead deae deaf deal deau deba debe debu dec- deca decc decd dece decl deco deda dedd dede dedo dedu deeb deed deef deel defe deff defo dela deld dele delf dell delo deol deua deue deul dfaf dfcc dfco dfcu dffa dfoe dlab dlbd dlco doab doae doal doba dobb dobe dobl dobu doca doce doco docu dod- doda dodd dode dodo doea doel doff dola dold dole dolf doll dolo dolu doob dood doof dool doub douc doud doue douf doul duaa duab duad dual dub- duba dubb dubc dube dubu duca duce duco duda dudd dude dudo dudu duel dufc duff dufu dula dulc dule dull dulo dulu duo- duul e-cl e-la eaaf eaba eaca eacc eada eadb eadd eaec eafb eala ealc eald eale ebac ebal ebba ebbc ebbo ebcc ebed ebel ebfc ebla eboe ebol eboo ebul ecaa ecac ecad ecal ecao ecbc ecbe ecca eccb eccc ecce eccl ecco ecdc ecdf ecdl eced ecef ecfa ecfc ecla eco- ecod ecol ecou ecua edac edad edca edda eddc edde eddo ede- edea edel edfa edfl edfu edla edle edoc edod edou educ eeca eede eedu eeea eeee eefa eefe eefl eele eeoc efab efca efco efda efeo effa efla efua el-b elab elac elad elal elba elbe elbo elbu elca elcb elce elco elda elde elea elec eled elee elef eleo elfa elfc elfe ella elle ello ellu elod elue elul eocd eode eola eole eolo euba eubc eucd eude eufc eula eule faaa faac faad faba