a-be a-do aaaa aaab aaac aaad aaae aaal aaba aabb aabc aabd aabl aabt aaca aacb aacc aacd aace aacl aaco aact aada aadc aade aadt aaea aaec aala aalc aald aale aall aalo aaoe aaoo aata aatc aatt abaa abab abac abad abae abal abat abb- abba abbb abbe abbo abbt abca abcb abcc abcd abcl abct abda abdo abec abed abee abel abet abla able ablo aboa abob abod abol aboo abot abta ac-t acaa acab acac acad acae acat acba acbl acca accc accd acce acco acct acda acdb acdc acde acdt ace- acea acec aced acel acet acla aclc acle acoa acod acoe acol acot acta actc acte actl acto actt adaa adab adac adad adae adal adao adat adba adbc adcc adda addc addd adde addl addo adea adeb adee adel adeo adet adle adob adoc adod adoe adoo adot adta aeac aecb aecl aect aede aedt aela aelc aeta aetc aeto aett alaa alac alad alae alal alao alat alb- alba albc albe albo alca alcc alce alco ald- alda alde aldl aldo alea alec aled alee aleo alet all- alla alle alll allo aloa aloc alod aloe alol aloo alot alta alte alto aoba aoca aoce aola aole aotc aotd 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 baaa baad baal baat baba babb babe babo bac- baca bacc bace baco bact bada badb badd bade bado baed bael bala balc bald bale ball balo balt baol bata batc bate bato batt bbad bbbb bbdd bbdo bbeb bbet bblb bcaa bcat bcbc bcca bccc bccl bcda bcde bcec bcet bctc bdbc bddc bdle bead beal beat beba bebb bebe bebo beca beda bede bedl bedo beeb beed beel beet bela beld bele bell belo belt beo- beod beot beta betc bete beto bett blaa blab blac blad blae blat blbt bldc blea bleb bled blee bleo blet blob bloc blod bloo blot boab boac boad boal boat boba bobb bobe bobo boca boce boco boda bodb bode bodo boea boec boee boel boeo boet bola bold bole boll bolo bolt boob booc bood booe bool boot bota botb botd bote boto bott btaa btcc btcl btdt btec btla btob bttb c-bo c-cd caaa caab caac caal caat caba cabe cabo cac- caca cacc cace caco cada cadc cadd cade cado caec cala calc cald cale call calo calt caod caol cat- cata catb catc catd cate cato catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbct 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 ccdc cced ccee ccel ccla cclc ccob ccoc ccod cctb cctc cctl cctt cd-e cdaa cdac cdad cdba cdda cddb cddl cdec cdot ceac cead ceal ceat ceba cec- ceca cece ceco cect ceda cedd cede cedo cedt ceeb ceec ceel cel- cela celc cele cell celo celt ceol cet- ceta cete ceto clab clad clat clcd cldc clea clec cled clee cleo clet clob clod cloe cloo clot cltb cltc coad coal coat coba cobb cobe cobo coca coce coco coct coda codd code codl coed coel col- cola colb cold cole coll colo colt coob cood cool coot cota cotb cotc cote coto cott ctab ctae ctal ctba ctca ctec ctle ctol ctot ctta d-bo daab daad daae daal daba dabb dabo dabt daca dace dact dada dade dado daeb dala dale dall dalo dalt data date dato datt dbcc dbtt dcbc dcca dccb dccc dccl dcct dcdb dctc dddd ddlc ddoc ddot deac dead deae deal deba debe debt dec- deca decc decd dece decl deco dect deda dedd dede dedo deeb deed deel deet dela deld dele dell delo delt deol deta dete deto dlab dlbd dlco doab doae doal doat doba dobb dobe dobl doca doce doco doct dod- doda dodd dode dodo doea doel dola dold dole doll dolo dolt doob dood dool doot dota dotd dote doto dott dtaa dtac dtcc dted dtla dtle dtot 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 ecaa ecac ecad ecal ecao ecat ecbc ecbe ecca eccb eccc ecce eccl ecco ecct ecdc ecdl eced ecla eclt eco- ecod ecol ecot ect- ecta ectc ecto edac edad edca edda eddc edde eddo ede- edea edel edla edle edoc edod edta eeca eede eeea eeee eele eeoc eeta eetc eete el-b elab elac elad elal elat elba elbe elbo elca elcb elce elco elda elde elea elec eled elee eleo elet ella elle ello elod elta elte elto eocd eode eola eole eolo eota eotc eotd eoto etal etat etbc etcc etco etec etee etel etla etoe etta ette etto laaa laac laad laal laat laba labe labo laca lacc lace lacl laco lact lada ladd lade lado lael laet lala lald lale lall lalo lata latc latd late lato latt lbcc lcac lcad lcat lcbc lcca lccc lcce lcdd lctl lcto ldeo leaa lead leal leao leat leba lebd lebo leca lece leco lect leda lede ledo ledt leea leed leel leet lela lele lell lelo leoc leod leta lete leto lett llao llat llcc lldb lldc llet lllc llll lloa lloc llod lloo loac load loat lob- loba lobb lobe lobo loca locc loce loco loda lode loeb lola lold lole loll lolo loob looc lood looe lool loot lota lotd lote lotl loto lott ltac ltae ltbl ltcc ltee lttc o-eo oade oall oate obad obal obba obbo obdt obea obec obed obel obet obla oble oboe obol obot obtd ocab ocac ocad ocal ocat ocbc occa occc occt oce oced ocee ocet oclc oct- octa octe octo odac odal odbo odda oddd odea oded odel odeo odet odla odle odoo odot oec-