a-be a-do aaaa aaab aaac aaad aaae aaal aaba aabb aabc aabd aabl aabt aaca aacb aacc aacd aace aacl aaco aact aacu aada aadc aade aadt aadu aaea aaec aala aalc aald aale aall aalo aalu aaoe aaoo aata aatc aatt abaa abab abac abad abae abal abat abau abb- abba abbb abbe abbo abbt abca abcb abcc abcd abcl abct abda abdo abdu abec abed abee abel abet abla able ablo aboa abob abod abol aboo abot abou abta abtu abua abud abue abul abut ac-t acaa acab acac acad acae acat acba acbl acca accc accd acce acco acct accu acda acdb acdc acde acdt ace- acea acec aced acel acet acla aclc acle aclu acoa acod acoe acol acot acou acta actc acte actl acto actt actu acu- acue acul acuo acut adaa adab adac adad adae adal adao adat adba adbc adcc adda addc addd adde addl addo addu adea adeb adee adel adeo adet adle adob adoc adod adoe adoo adot adta adua adub adue aeac aecb aecl aect aede aedt aela aelc aeta aetc aeto aett alaa alac alad alae alal alao alat alau alb- alba albc albe albo albu alca alcc alce alco ald- alda alde aldl aldo alea alec aled alee aleo alet aleu all- alla alle alll allo allu aloa aloc alod aloe alol aloo alot alou alta alte alto alua alut aoba aoca aoce aoeu aola aole aotc aotd aoul aout at-l at-t ataa atab atac atad atae atal atat atca atcc atcl atco atdt atea atec ated atee atel ateo atla atle atlo atob atoc atod atoe atol atot atta atte atto attu atua atub atuc atul auaa aube auca auce auct audc aude audo auel aul- aula auld aule aull aulo ault aulu auol aut- aute auto baaa baad baal baat baba babb babe babo babu bac- baca bacc bace baco bact bada badb badd bade bado badu baed bael bala balc bald bale ball balo balt balu baol bata batc bate bato batt batu bau- baud baul bbad bbau bbbb bbdd bbdo bbeb bbet bblb bcaa bcat bcbc bcca bccc bccl bcda bcde bcec bcet bctc bcuc bdbc bddc bdle bead beal beat beau beba bebb bebe bebo beca becu beda bede bedl bedo bedu beeb beed beel beet bela beld bele bell belo belt belu beo- beod beot beta betc bete beto bett betu blaa blab blac blad blae blat blau blbt blcu bldc blea bleb bled blee bleo blet bleu blob bloc blod bloo blot blou blub blud blue blut boab boac boad boal boat boba bobb bobe bobo bobu boca boce boco bocu boda bodb bode bodo bodu boea boec boee boel boeo boet bola bold bole boll bolo bolt bolu boob booc bood booe bool boot bota botb botd bote boto bott boua boud boue boul bout btaa btcc btcl btdt btec btla btob bttb buad bual buat buba bubb bube bubo bubu buca bucc buce buco bucu buda budb budd bude budl budo budu buea buel bueu bula bulb buld bule bull bult bulu buol but- buta bute buto butt c-bo c-cd caaa caab caac caal caat caba cabe cabo cabu cac- caca cacc cace caco cada cadc cadd cade cado cadu caec caeu cala calc cald cale call calo calt calu caod caol cat- cata catb catc catd cate cato catt catu cauc caul cauo caut cbac cbal cbat cbbc cbca cbcc cbce cbcl cbct cbcu cbdb cbdc cbdo cbea cbec cbee cbet cblb cblc cbol cbot cbta cbtc cbtl ccaa ccab ccac ccad ccat ccba ccbc ccca cccb cccc cccl cccu ccdc cced ccee ccel ccla cclc ccob ccoc ccod cctb cctc cctl cctt ccuc ccut cd-e cdaa cdac cdad cdba cdda cddb cddl cdec cdot ceac cead ceal ceat ceba cebu cec- ceca cece ceco cect ceda cedd cede cedo cedt cedu ceeb ceec ceel cel- cela celc cele cell celo celt ceol ceou cet- ceta cete ceto clab clad clat clau clcd cldc clea clec cled clee cleo clet cleu clob clod cloe cloo clot clou cltb cltc club clud clue clut coad coal coat coba cobb cobe cobo cobu coca coce coco coct cocu coda codd code codl coed coel col- cola colb cold cole coll colo colt colu coob cood cool coot cota cotb cotc cote coto cott cotu coua coub coud coue coul cout ctab ctae ctal ctba ctca ctec ctle ctol ctot ctta cuau cub- cuba cubb cube cuca cucc cuce cuda cude cued cula culb culc culd cule cull culo cult cut- cuta cutc cute cuto cutt d-bo daab daad daae daal daau daba dabb dabo dabt dabu daca dace dact dada dade dado dadu daeb daeu dala dale dall dalo dalt dalu daou data date dato datt datu daub daud daue daut dbcc dbtt dcbc dcca dccb dccc dccl dcct dccu dcdb dctc dddd ddlc ddoc ddot ddub deac dead deae deal deau deba debe debt debu dec- deca decc decd dece decl deco dect deda dedd dede dedo dedu deeb deed deel deet dela deld dele dell delo delt deol deta dete deto deua deue deul deut dlab dlbd dlco doab doae doal doat doba dobb dobe dobl dobu doca doce doco doct docu dod- doda dodd dode dodo doea doel dola dold dole doll dolo dolt dolu doob dood dool doot dota dotd dote doto dott doub douc doud doue doul dout dtaa dtac dtcc dted dtla dtle dtot duaa duab duad dual duat dub- duba dubb dubc dube dubu duca duce duco duct duda dudd dude dudo dudu duel duet dula dulc dule dull dulo dult dulu duo- duta dute duul duut e-cl e-la eaba eaca eacc eada eadb eadd eaec eala ealc eald eale eata eate ebac ebal ebba ebbc ebbo ebcc ebed ebel ebla eboe ebol eboo ebul ecaa ecac ecad ecal ecao ecat ecbc ecbe ecca eccb eccc ecce eccl ecco ecct ecdc ecdl eced ecla eclt eco- ecod ecol ecot ecou ect- ecta ectc