a-be a-do aaaa aaab aaad aaae aaar aaba aabb aabd aabt aada aade aadt aaea aaoe aaoo aara aard aare aaro aart aata aatt abaa abab abad abae abar abat abb- abba abbb abbe abbo abbr abbt abda abdo abed abee aber abet aboa abob abod aboo abor abot abra abro abta adaa adab adad adae adao adar adat adba adda addd adde addo addr adea adeb adee adeo ader adet adob adod adoe adoo ador adot adra adre adro adta aede aedt aeer aer- aera aerd aero aeta aeto aetr aett aoba aora aorb aort aotd arab arad arae arar arat arba arbe arda arde ardo area ared aree areo aret aroa arob arod aroe aroo aror arr- arra arre arro arrr arrt arta arte arto artr at-t ataa atab atad atae atar atat atdt atea ated atee ateo ater atob atod atoe ator atot atra atre atro atta atte atto attr baaa baad baar baat baba babb babe babo babr bada badb badd bade bado badr baed baer bar- bara barb bard bare baro barr bart bata bate bato batt bbad bbbb bbdd bbdo bbeb bbet bd-r bead bear beat beba bebb bebe bebo beda bede bedo beeb beed beer beet beo- beod beor beot bera berd bere bero berr bert beta bete beto bett boab boad boar boat boba bobb bobe bobo boda bodb bode bodo boea boee boeo boer boet boob bood booe boor boot bor- bora bord bore boro borr bort bota botb botd bote boto bott brab brad brae brao brat brda brdo brdt brea breb bred bree breo brer bret broa brob brod broe broo bror brot brrr btaa btdt btob btor btrt bttb d-bo daab daad daae daar daba dabb dabo dabt dada dade dado daeb daer dara darb dard dare daro darr dart data date dato datr datt dbar dbtt dddd ddot ddre dead deae dear deba debe debt deda dedd dede dedo deeb deed deer deet deor der- dera derb dere dero derr deta dete deto detr doab doae doar doat doba dobb dobe dod- doda dodd dode dodo doea doer doob dood door doot dora dord dore doro dorr dort dota dotd dote doto dott draa drab drad drar drat drba drda drea dred dree dret drob drod drot drra dtaa dted dtor dtot eaba eada eadb eadd eara earb eard eare earo eart eata eate ebba ebbo ebbr ebed eber eboe eboo ebor ebro edad edar edda edde eddo ede- edea eder edod edra edta eede eeea eeee eera eero eeta eete eode eora eore eota eotd eoto erad erat erba erbb erbe erda erde ereb ered erer eret erob erod eroe eroo erra erre erro erta etat etbr etee eter etoe etra etre etro etta ette etto o-eo 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 odra 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 orda orde ordo ore- orea oreb ored oreo orer oro- oroe oror orot orra orro orta orte orto otar otbd otea oted otee oter oto- otoe otoo otor otra otre otro otta otte otto raab raad raat raba rabb rabe rabo rada radd rade rado radr radt raed raer raob rara rarb rare raro rata rate rato ratt rbbb rbbr rder rea- read reae reao rear reat reba rebb rebe rebo reda redd rede redo redr reeb reed reet reod reot rera rerd rere rero rert reta retd rete reto retr rett roab road roar roat rob- roba robb robe robo robt roda rodd rode rodo roea roed roer roet roob rood roor root rora rore roro rort rota rote roto rotr rott rrad rrat rred rrrr rtdt rtee taa- taar taat taba tabb tabe tabo tada tade tado taer taoa taor tara tarb tard tare taro tarr tart tata tatb tate tato tatr tatt tbar tbrb tbta tddb tdor tdra tead tear teat teba tebo teda tedd tede teed teer teet teor ter- tera tere tero terr teta tete teto tetr tett toab toad toat toba tobe tobo tobt toda todd tode todo todt toea toed toee toer toet tooa tood toor toot tora tord tore toro torr tort tota totd tote toto totr tott traa trab trad trae trao trat tre- trea tred tree treo tret troa trod troe troo trot trra trte trtr ttab ttbb tteo tter ttoe tttt