a-be a-do aaaa aaab aaad aaae aaar aaba aabb aabd aabt aada aade aadt aadu aaea aaoe aaoo aara aard aare aaro aart aaru aata aatt abaa abab abad abae abar abat abau abb- abba abbb abbe abbo abbr abbt abda abdo abdu abed abee aber abet aboa abob abod aboo abor abot abou abra abro abta abtu abua abud abue abut adaa adab adad adae adao adar adat adba adda addd adde addo addr addu adea adeb adee adeo ader adet adob adod adoe adoo ador adot adra adre adro adta adua adub adue adur aede aedt aeer aer- aera aerd aero aeta aeto aetr aett aoba aoeu aora aorb aort aotd aout arab arad arae arar arat arau arba arbe arda arde ardo ardu area ared aree areo aret areu aroa arob arod aroe aroo aror arr- arra arre arro arrr arrt arru arta arte arto artr arua arub arud arue arut at-t ataa atab atad atae atar atat atdt atea ated atee ateo ater atob atod atoe ator atot atra atre atro atru atta atte atto attr attu atua atub atur auaa aube aude audo auer aur- aura aurd aure auro aut- aute auto baaa baad baar baat baba babb babe babo babr babu bada badb badd bade bado badr badu baed baer bar- bara barb bard bare baro barr bart baru bata bate bato batt batu bau- baud baur bbad bbau bbbb bbdd bbdo bbeb bbet bd-r bead bear beat beau beba bebb bebe bebo beda bede bedo bedu beeb beed beer beet beo- beod beor beot bera berd bere bero berr bert beru beta bete beto bett betu beur boab boad boar boat boba bobb bobe bobo bobu boda bodb bode bodo bodu boea boee boeo boer boet boob bood booe boor boot bor- bora bord bore boro borr bort boru bota botb botd bote boto bott boua boud boue bour bout brab brad brae brao brat brau brda brdo brdt brea breb bred bree breo brer bret broa brob brod broe broo bror brot brou brrr brud brue brut btaa btdt btob btor btrt bttb buad buar buat buba bubb bube bubo bubu buda budb budd bude budo budu buea buer bueu bur- bura burb burd bure buro burr burt buru but- buta bute buto butt d-bo daab daad daae daar daau daba dabb dabo dabt dabu dada dade dado dadu daeb daer daeu daou dara darb dard dare daro darr dart daru data date dato datr datt datu daub daud daue daur daut dbar dbtt dddd ddot ddre ddub dead deae dear deau deba debe debt debu deda dedd dede dedo dedu deeb deed deer deet deor der- dera derb dere dero derr deta dete deto detr deua deue deur deut doab doae doar doat doba dobb dobe dobu dod- doda dodd dode dodo doea doer doob dood door doot dora dord dore doro dorr dort doru dota dotd dote doto dott doub doud doue dour dout draa drab drad drar drat drau drba drda drea dred dree dret drob drod drot drou drra drua drub drue drut druu dtaa dted dtor dtot duaa duab duad duar duat dub- duba dubb dube dubu duda dudd dude dudo dudu duer duet duo- dura dure duro durt duru duta dute duur duut eaba eada eadb eadd eara earb eard eare earo eart eata eate ebba ebbo ebbr ebed eber eboe eboo ebor ebro ebru ebur edad edar edda edde eddo ede- edea eder edod edou edra edru edta edur eede eedu eeea eeee eera eero eeta eete eetu eode eora eore eota eotd eoto erad erat erau erba erbb erbe erda erde ereb ered erer eret erob erod eroe eroo erra erre erro erta ertu erua erub erur etat etbr etee eter etoe etra etre etro etta ette etto ettu etua euba eude euer eur- eura eure euro eurt o-eo oaau oade oaer oara oare oate obad obba obbo obdt obea obed ober obet oboe obor obot obra obre obro obtd odbo odda oddd odea oded odeo oder odet odoo odor odot odou odra odtu odur oedo oera oere oeta ooaa ooba oobe ooda ooer oooo oora oord oore oort ootb orab orad orae orao orar orat orba orbb orbe orbo orbu orda orde ordo ordu ore- orea oreb ored oreo orer oro- oroe oror orot orra orro orta orte orto orub otar otbd otea oted otee oter oto- otoe otoo otor otra otre otro otta otte otto ottu otur ouad ouat oude ouea oued ouer our- oura oure ouro ourt out- outa outb oute outo ouu- raab raad raat raba rabb rabe rabo rabu rada radd rade rado radr radt radu raed raer raob rara rarb rare raro rata rate rato ratt ratu raua raub raud raue raut rbbb rbbr rder rea- read reae reao rear reat reau reba rebb rebe rebo rebu reda redd rede redo redr redu reeb reed reet reod reot reou rera rerd rere rero rert reru reta retd rete reto retr rett reue reut reuu roab road roar roat rob- roba robb robe robo robt robu roda rodd rode rodo roea roed roer roet roob rood roor root rora rore roro rort roru rota rote roto rotr rott roua roub roud roue rout rrad rrat rred rrrr rtdt rtee ruad ruba rubb rube rubu ruda rudd rude rudo rued ruer ruet rura rurd rure ruro ruru ruta rute ruto rutt rutu ruud taa- taar taat taba tabb tabe tabo tabu tada tade tado taer taoa taor taou tara tarb tard tare taro tarr tart taru tata tatb tate tato tatr tatt tatu taua taub taue taur taut tbar tbrb tbta tddb tdor tdra tead tear teat teba tebo tebu teda tedd tede teed teer teet teor ter- tera tere tero terr teru teta tete teto tetr tett tetu teut toab toad toat toau toba tobe tobo tobt tobu toda todd tode todo todt todu toea toed toee toer toet tooa tood toor toot tora tord tore toro torr tort