a-be aaaa aaab aaae aaap aaar aaba aabb aabp aabt aaea aaep aaoe aaoo aapa aapo aapt aara aare aaro aarp aart aaru aata aatt aaup abaa abab abae abap abar abat abau abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abou abpa abpp abpr abra abro abta abtu abua abue abut aeap aeer aer- aera aero aeta aeto aetr aett aoba aoeu aopo aora aorb aort aout apao apap apar apat apba apbr apea apep aper apet apeu apo- apoe apoo apop apor apot apou appa appr appt appu apra apre apro aprt apta apte aptt apua apup arab arae arap arar arat arau arba arbe area aree areo arep aret areu aroa arob aroe aroo aror arpa arpe arpu arr- arra arre arro arrr arrt arru arta arte arto artr arua arub arue arup arut at-t ataa atab atae atap atar atat atea atee ateo atep ater atob atoe atop ator atot atpr atra atre atro atrp atru atta atte atto attp attr attu atua atub atur auaa aube auer aur- aura aure auro aut- aute auto baaa baar baat baba babb babe babo babr babu baer bapa bape bapp bapt bapu bar- bara barb bare baro barr bart baru bata bate bato batt batu bau- baur bbau bbbb bbeb bbet bbpr beap bear beat beau beba bebb bebe bebo beeb beep beer beet beo- beor beot bepo bera bere bero berr bert beru beta bete beto bett betu beur boab boar boat boba bobb bobe bobo bobu boea boee boeo boep boer boet boob booe boop boor boot bopa bope bopp bor- bora bore boro borr bort boru bota botb bote boto bott boua boue boup bour bout bpea bpoe bpot brab brae brao brat brau brea breb bree breo brep brer bret broa brob broe broo bror brot brou brrr brue brup brut btaa btbp btob btor btrt bttb buar buat buba bubb bube bubo bubu buea buer bueu bupa bur- bura burb bure buro burp burr burt buru but- buta bute buto butt eaba eaop eapp eara earb eare earo earp eart eata eate ebba ebbo ebbr eber eboe eboo ebor ebpo ebro ebru ebur eeea eeee eera eero eeta eete eetu eora eore eota eoto epaa epee eper epor epot eppa eppo eppp epra eprb epro eprp epta epte epub erap erat erau erba erbb erbe ereb erer eret erob eroe eroo erpa erpe erra erre erro erta ertu erua erub erur etap etat etbr etee eter etoe etra etre etro etta ette etto ettu etua euba euer eur- eura eure euro eurt o-eo oaau oaer oara oare oate obba obbo obea ober obet oboe obor obot obra obre obro oepa oera oere oeta ooaa ooba oobe ooer oooo oora oore oort ootb ootp opap opar opep oper opet opo- opor oppa oppo opra opto opua orab orae orao orar orat orba orbb orbe orbo orbu ore- orea oreb oreo orer oro- oroe oror orot orpe orra orro orta orte orto orub orup otap otar otea otee otep oter oto- otoe otoo otor otpp otra otre otro otta otte otto ottu otur ouat ouea ouer oupa oupe our- oura oure ouro ourt out- outa outb oute outo ouu- paap paar paat paba pabt pabu paea paep paer papa papb pape papp papr par- para pare paro parp parr part paru pata pate pato patr patt patu paua paup paur paut pbar pbpa peab peap pear peat peau peba peep peer peet peor peou pepa pepe pepo per- pera pere pero perp perr pert peru peta pete peto petr pett peur peut poar poat poba pobo poea poer poet poop poor poot pop- popa pope popo popp popt pora porb pore poro porr port pota pote poto pott potu poup pour pout ppap ppar pper ppoa pppa pppo pppp ppru ppta pptt ppur prae prao prar prat prau pre- preb pree prep pret preu pro- proa prob proe proo prop prot prou prtp prtr prue prut pruu ptab pter ptop pu-e puao puar pube pubu pueo puer puet pueu pupa pupe pupu pur- pura purb pure puro purp purr puru put- puta pute puto putt putu raab raat raba rabb rabe rabo rabu raep raer raob raop rapa rape rapp rapt rara rarb rare raro rata rate rato ratp ratt ratu raua raub raue raup raut rbbb rbbr rea- reae reao reap rear reat reau reba rebb rebe rebo rebu reeb reep reet reop reot reou repe repo repp repr rept repu rera rere rero rert reru reta rete reto retr rett reue reup reut reuu roab roap roar roat rob- roba robb robe robo robt robu roea roer roet roob roop roor root ropa rope ropo rora rore roro rort roru rota rote roto rotr rott roua roub roue roup rout rpet rpob rpoe rpta rrat rrrr rtee rtpa rttp ruba rubb rube rubp rubu ruer ruet rupa rupe rupp rupt rura rure ruro rurp ruru ruta rute ruto rutt rutu taa- taar taat taba tabb tabe tabo tabu taer taoa taor taou tapa tape tapo tapp tapr tapt tapu tara tarb tare taro tarp tarr tart taru tata tatb tate tato tatr tatt tatu taua taub taue taur taut tbar tbrb tbta tbtp tear teat teba tebo tebu teer teet teor tepa tepe tepp tepu ter- tera tere tero terp terr teru teta tete teto tetr tett tetu teut toab toat toau toba tobe tobo tobt tobu toea toee toer toet tooa toor toot top- topa tope topo topp topt topu tora tore toro torp torr tort toru tota tote toto totr tott toup tour tout tpap tpau tper tppa tppp tppr tpte tptp tptr tput traa trab trae trao trap trat trau tre- trea tree treo tret treu troa troe troo trop trot trou trpa trpe trpp trra trte trtr trub true trut truu ttab ttbb tteo tter ttoe ttop tttt tuae tuao tuar tuat tuba tubb tube tubo tubr tubu tuer tuet tuor tupa