a-do a-fu aaaa aaab aaac aaad aaaf aaal aaba aabb aabc aabd aabl aabt aaca aacb aacc aacd aacf aacl aaco aact aacu aada aadc aadt aadu aafa aafb aafc aafd aaff aafl aala aalc aald aall aalo aalu aaoo aata aatc aatf aatt abaa abab abac abad abaf abal abat abau abb- abba abbb abbo abbt abca abcb abcc abcd abcf abcl abct abda abdo abdu abff abla ablo aboa abob abod abof abol aboo abot abou abta abtu abua abud abuf abul abut ac-t acaa acab acac acad acat acba acbl acca accc accd accf acco acct accu acda acdb acdc acdf acdt acfc acfd acfl acft acla aclc aclu acoa acod acol acot acou acta actc actf actl acto actt actu acu- acuf acul acuo acut adaa adab adac adad adal adao adat adba adbc adcc adda addc addd addl addo addu adfa adfc adfl adob adoc adod adoo adot adta adua adub afaa afad afao afat afca afcb afcc afcu afdb afdc afdl affa affc affo afft afla aflc afoa afol afoo afta aftc afua afud alaa alac alad alal alao alat alau alb- alba albc albo albu alca alcc alco ald- alda aldl aldo alfa all- alla alll allo allu aloa aloc alod alof alol aloo alot alou alta alto alua aluf alut aoba aoca aola aotc aotd aotf aouf aoul aout at-l at-t ataa atab atac atad atal atat atca atcc atcf atcl atco atdt atfb atfc atla atlo atob atoc atod atof atol atot atta atto attu atua atub atuc atul auaa auca auct audc audo aufc aul- aula auld aulf aull aulo ault aulu auol aut- auto baaa baad baaf baal baat baba babb babo babu bac- baca bacc baco bact bada badb badd bado badu bafc baff bafo baft bala balc bald balf ball balo balt balu baol bata batc batf bato batt batu bau- baud bauf baul bbad bbau bbbb bbdd bbdo bbfc bblb bcaa bcat bcbc bcca bccc bccl bcda bcfc bcof bctc bcuc bdbc bddc bduf bfca bffl bfta bftt blaa blab blac blad blat blau blbt blcu bldc blfc blob bloc blod bloo blot blou blub blud bluf blut boab boac boad boal boat boba bobb bobo bobu boca boco bocu boda bodb bodo bodu bofa bofd boff bofu bola bold boll bolo bolt bolu boob booc bood boof bool boot bota botb botd boto bott boua boud bouf boul bout btaa btaf btcc btcl btdt btfc btla btob bttb buad bual buat buba bubb bubo bubu buca bucc buco bucu buda budb budd budl budo budu bufc buff bufo bula bulb buld bull bult bulu buol but- buta buto butt c-bo c-cd caaa caab caac caaf caal caat caba cabf cabo cabu cac- caca cacc caco cada cadc cadd cado cadu cafa cafb cafc caff cafl cafu cala calc cald calf call calo calt calu caod caol cat- cata catb catc catd catf cato catt catu cauc cauf caul cauo caut cbac cbal cbat cbbc cbca cbcc cbcl cbct cbcu cbdb cbdc cbdo cbfb cbfc cblb cblc cbol cbot cbta cbtc cbtf cbtl ccaa ccab ccac ccad ccaf ccat ccba ccbc ccca cccb cccc cccf cccl cccu ccdc ccdf ccfa ccfc ccfd ccff ccfl ccla cclc ccob ccoc ccod cctb cctc cctl cctt ccuc ccut cdaa cdac cdad cdba cdbf cdda cddb cddl cdfa cdot cfaa cfab cfac cfao cfbc cfbt cfca cfcb cfcf cfcl cfco cfda cffb cfoa cfta cftc cftl clab clad claf clat clau clcd cldc clob clod clof cloo clot clou cltb cltc club clud clut coad coal coat coba cobb cobo cobu coca coco coct cocu coda codd codl cofc coff coft col- cola colb cold coll colo colt colu coob cood coof cool coot cota cotb cotc coto cott cotu coua coub coud coul cout ctab ctal ctba ctca ctcf ctfc ctfo ctol ctot ctta cuau cub- cuba cubb cuca cucc cuda cufa cufc cuff cufo cula culb culc culd cull culo cult cut- cuta cutc cuto cutt d-bo daab daad daal daau daba dabb dabo dabt dabu daca dact dada dado dadu dafa dafc daff dafo daft dala dalf dall dalo dalt dalu daou data dato datt datu daub daud daut dbcc dbfc dbfo dbtt dcbc dcca dccb dccc dccl dcct dccu dcdb dcfc dctc dddd ddlc ddoc ddot ddub dfaf dfcc dfco dfcu dfdt dffa dlab dlbd dlco doab doal doat doba dobb dobl dobu doca doco doct docu dod- doda dodd dodo doff dola dold dolf doll dolo dolt dolu doob dood doof dool doot dota dotd doto dott doub douc doud douf doul dout dtaa dtac dtcc dtfc dtla dtot duaa duab duad dual duat dub- duba dubb dubc dubu duca duco duct duda dudd dudo dudu dufc duff dufu dula dulc dull dulo dult dulu duo- duta duul duut faaa faac faad faba fabd fabo fabu faca facc fact fada fadd fado fafa fafc faff fafo fala falc fald fall falo falt falu fata fatc fatf fato fatt faud faul faut fbla fcab fcal fcat fcba fcca fccf fcda fcot fcto fdca fdoa fdoc fdot fdtc fdtl ffcc ffff fftf flab flac flad flao flat flcl flob floc flod floo flot flou flub flud fluf fluo foad foaf foal foba fobt foca foco foda fofo fola folc fold foll folo folt food foof fool foot fota foto fott foua foud foul fout ft-c ft-l ftcd ftfc ftlb ftub ftuc fuad fuat fubb fubu fuc- fuca fuct fuda fudd fufc fuff fufu fula full fulu futa futo futu laaa laac laad laal laat laba labo labu laca lacc lacl laco lact lacu lada ladd lado ladu lafb lafc laff laft lala lald lall lalo lalu laou lata latc latd lato latt latu laub laud lauf laul laut lbcc lcac lcad lcat lcbc lcca lccc lcdd lcfc lctl lcto ldcf lfat lfca lfcc llao llat llcc lldb lldc lllc llll lloa lloc llod lloo llud loac load loaf loat lob- loba lobb lobo loca locc loco locu