pro- prob prod proe proo prop prot prou prpd prrd prtp prtr prud prue prut pruu pter ptop ptpd ptrd pu-e pube pubu pudo pudu pued pueo puer puet pueu pupe pupu pur- purb pure puro purp purr puru put- pute puto putt putu rbbb rbbr rdbp rder rebb rebe rebo rebu redd rede redo redr redu reeb reed reep reet reod reop reot reou repe repo repp repr rept repu rerd rere rero rert reru retd rete reto retr rett reue reup reut reuu rob- robb robe robo robt robu rodd rode rodo roed roer roet roob rood roop roor root rope ropo rore roro rort roru rote roto rotr rott roub roud roue roup rout rpdp rpet rpob rpoe rptd rred rrrr rtdt rtee rttp rubb rube rubp rubu rudd rude rudo rudp rued ruer ruet rupe rupp rupt rurd rure ruro rurp ruru rute ruto rutt rutu ruud tbrb tbtp tddb tdor tebo tebu tedd tede teed teer teet teor tepe tepp tepu ter- tere tero terp terr teru tete teto tetr tett tetu teut tobe tobo tobt tobu todd tode todo todt todu toed toee toer toet tood toor toot top- topd tope topo topp topt topu tord tore toro torp torr tort toru totd tote toto totr tott toup tour tout tpdu tped tper tppd tppp tppr tpte tptp tptr tput tre- tred tree treo tret treu trod troe troo trop trot trou trpe trpp trte trtr trub trud true trut truu ttbb tteo tter ttoe ttop tttt tubb tube tubo tubr tubu tude tudu tuer tuet tuor tupe tupo tupu turb turd ture turo turp turr turt turu tute tuto tutt tutu tuuo u-rp ubbe ubbo uber ubet ubod ubud uder udet udoo udop udot udpd uor- uore upbe updo uped upor uppe uppp uppu upto upup urbe urde urdu ure- ured uret uro- uroo urpo urre urte urup urur urut utep uter utor utpd utto uttu uuuu

-tree b-e-d bbbee bd-re bdoor bdort be-er be-ro bebdo bebed beber bebod bebop bebot bedde bedee beder bedet bedot bedub bedue beebe beede beerd beete beeut beode beord beote beour bepop beppe beppo beppu berbe berde berdu bered beret berob beroe beror berre berru berte berto betee beter betoo betor betou betre bett- bette betto beuer beure beute bo-bo bobet bobr bobre bobup bodd- boded boder bodoe bodor boedo boero boeur boode booed booer boord boore boort booru bopet borbo borde bordo bored boree borer boret boro- borod boroo borot borou borre borro borup borut botet botou botro botte bottu boudu boued bouee bouer bouet bourd boure boute bouto brebu bredd brede bredt breed breer breet breo- brerd brere breto brett breu- brobo brodd brode brodo broer brood broto broud broue brout brrrr brud- brude brued bruer bruet brute btr-d btr-t bubbe buber budde buddu budur buord burde buret buroo burro burru burte burtt burud burut butdo buteo buter buto- butor butot butou butte butuo butut d-dot d-rod ddddd ddebo debed deber debet debot debro debte debut dedde dedee deder dedur dedut deede deepe deepp deepu deere deore deoro depbt depoe depop depor depot depue derbe derde dered dero- derob derpt derre derro derub derue deter detoo detre dette detuo detur deure deut- deuto do-do dobee dober dobre dobro dodoo dodro doerr doodo doore doote doout doped doper dopet doppe dordt dored doree doret dorot dorpe dorre dorte dorud doted doter dotoo dotto doubt doude douer doupe doupt doure douro doute drbob drdre dredd drede dreed dreep drepe drere drobe drobo drode drood droop drop- drope dropo dropt drote drott droue droup drout drude drupe dtour dubbo dubee duddo duded duder dudou duere duerr duete dueto duett dueup duped duper durbe dured duree durer duret durre durte durtu dutte e-dee e-otd e-pro ebbed ebber ebbet ebert eboue ebure edder eddoe eddre edeo- edere edoor edott edred eeeee eeped eepee eerde eorre epode epopt epote epptb epure erbbe erber erdor erdre erdut erede erept erere erode erodr eroor erore eroto erred error errtu erte erter erupt etete etoro etour etree etter etude eturu eubro euro- europ eurre o-r-b obbet obedt obert obete obodo oboro obote oboue obout obreb obudu odder oddup oddur odebo odeto odeur odore odour odudu odure oduro oeppo oo-er ooooo oopod op-ed opepe opere opobo opodo opped opper opted opter opto- optot optto orbed orbot order ordet ordre ordro oredo oreed oreo- orere orero orobe orobo orodo oroer orout orped orret orter ortet ortoo orube oruro orutu otere otero ototo otour otpor otter ottur oture oubut ouder ouedo ouert ouoro ourde oure- outdo outed outer outre outro outto p-rep pebre pedee pedo- pedot pedro peebo peebu peedu peere peert peete pepee peppe pept- pepto pepup perde perdu perer peret perot perou perre perro perte perto perur petbe peter petr- petre petro petru pette petto petur peude peure po-po pobe poder podo- podob podoe podor poete pooed pooer poope poopo poore poort poote poped poper popet popop poppe poppo popup poreb pored porer poret poro- porro porte porto portu porur poteb poted potee poter potoo potop potor potpe potro potte potto pottu pouer poupe poure prede preop prepd prete preto probe probo prodd prode proer proor proot prop- prope propp propr propt prore prot- proto proud prout prtor prude prute pter- ptere ptero ptprb ptprd ptpre ptpro ptprr ptprt ptpru puber pubo- pudde puder pudob pudor pudur puero puett pupet puppe puppo pured puree purer puro- purre purte puter putor putre putt- putte putto puttu putuo putup re-up rebbe reber rebet rebop rebud rebut redbd redde reder redor redot redub redup redur reede reepe reere reord repet repop repor repot reppe repro reprt reptd repub reput rerde rere- reree reret rerob reted retee reter retop retro rette retto reuer reuet reute ro-ro robbe robbo robed rober robo- robop robor robot robrt robte robur rodbo rodde roded rodeo roder rodor roero roode roodu rooer roope roore roote rooue roped roper roppe rorbu rorer roteb roted roter roto- rotor rotot rotte rotto roubt roude rouer rouet roure