out- outb oute outi outo ouu- rbbb rbbr rebb rebe rebo rebu reeb reef reet refe reff refi refr reft refu reif reii reir reit reiu reof reot reou rere reri rero rert reru rete reti reto retr rett reue reuf reut reuu rfef rib- ribe ribo ribu rief rier riet rieu rife riff rift rifu riif riot riou rire riri rite riti rito ritt ritu riue rob- robb robe robi robo robt robu roer roet rofe roff rofo roif roio roir roit roiu roob roof rooi roor root rore rori roro rort roru rote roti roto rotr rott roub roue rouf rout rrif rrrr rtbf rtee rtei rtfb rubb rube rubi rubu ruer ruet rufe ruff rufo ruft ruif ruit rure ruri ruro ruru rute ruti ruto rutt rutu tbit tbrb tebo tebu teef teer teet teff tefi teft teie teir teiu teor ter- tere terf teri tero terr teru tete teti teto tetr tett tetu teut tfeb tfot tibi tibu tie- tiee tief tiei tieo tier tiet tiff tifo tift tiit tiiu tiou tirb tire tiri tiro tirr tiru tite titi tito titt titu tobe tobi tobo tobt tobu toee toei toer toet toff tofi tofo toft tofu toie toit toof toor toot tore torf tori toro torr tort toru tote toti toto totr tott toui tour tout tre- tree tref trei treo tret treu trfr tri- trib trie trif trio trit troe troi troo trot trou trte trtr trub true trut truu ttbb tteo tter ttff ttoe tttt tubb tube tubo tubr tubu tuei tuer tuet tufe tuff tufi tufo tuft tufu tuit tuiu tuor turb ture turf turi turo turr turt turu tute tuti tuto tutt tutu tuuo u-ie ubbe ubbi ubbo uber ubet ubii ubir ubit ubtf ueir ufer uffe uirr uofo uor- uore urbe urbi ure- uret urfe urff urfi urft urib urie urif uriu uro- uroo urre urri urte urur urut uter utfo utor utri utti utto uttu uuri uutf uuuu

-tree bbbee be-er be-ro beber bebot bebti beebe beeft beeri beete beeut beffe befie befit befoe befor befur beibi beier beife beire beite beofe beoff beoir beote beour berbe berei beret berie berio berit beriu berob beroe beror berre berri berru berte berti berto betee beter betie betio betoo betor betou betre bett- bette betti betto beuer beure beute bibbe bibbo biber bibie bibio bibri biebe biefe biere bieri biert bieti bifer biffi biffo bifor biore bioue birie birou birur biter bitit bitof bitru bitte bitti bitto biure bo-bo bobbi bobet bobr bobre bobri boero boeuf boeur bofet boffi boffo boibe boier boire boiro boite boito booer booit boore boort booru borbo boree borer boret borio boro- boroo borot borou borre borro borut botet botie botou botro botte botti bottu bouee bouer bouet boure bouri boute bouto brebu breef breer breet breit breo- brere breto brett breu- bribe brief brier brifu briot briou brite brito britt brobo broer broft broto broue brout brrrr bruer bruet bruff bruit bruiu bruri brute btr-t bubbe buber bufet buffe buffi buffo buire buret burfi burie burio buroo burri burro burru burte burtt burut buteo buter butit buto- butor butot butou butte butuo butut e-fit ebber ebbet ebbie ebert ebibe eboue ebrio ebure eeeee eerie eetti ef-tu efere eferi efetf effer effet effie effio efore efrei efter efuru efutu eieio eirie eiter eitri eofor eorre erbbe erber erere erier eriff erio- erite eritu eroor erore eroto error errtu erte erter etete etio- etite etoro etour etree etter ettie eturu eubie eubro euro- eurre febio febre feeor feere fefor feier feoff feret ferie ferio ferit ferr- ferre ferri ferro ferte feter feti- fetii fetir feto- fetor fette feuer feute fiber fibr- fibre fibro fieee fieri fiero fifer fifie fiore fiori firee firei firer firie firit firou firre fitit fitof fitor fitou fitri fitte fitto foeti foir- foire foore foote footi fore- foreo foret forio forit forro forte forti forto forur fotte fotui fotur fouee fouet fourb foure fouro freei freer freet freir freit frere frett freur frier frite frito fritt frobe froit froot frore frote fruit frute fruto ftrtt fu-fu fuero fuite furbo furie furio furir furo- furor futur i-beo i-bet i-bot ibbur ibeof ibero ibert ibeti ibibo ibore iebet ieiri ierei ieroe iette if-- ifere iffet iffou ifrit ifttt iiiee iiiii iitti iobit ioffe ioooi ioooo iorio iotit iotti irbit irete irite irobo irori irour irrit itbit itero itete itfet itfit itfor itire itobi itoff itour itout itter ittoo ittre ittti itu-r itu-t ituri ituro ituru itutu iurie o-fer o-r-b obbet obeie obert obete oboro obote oboue obout obreb oeiro offer offie offir offit offof offre offto ofori ofoto ofour ofter oirot oitti oo-er oobit ooioo ooooo oorie orbit orbot orebi oreo- oreoi orere orero orfei orfeo orfeu orfoe orfor oribe oribi orito orobe orobo oroer orout orret orter ortet ortoo orube oruro orutu otere oteri otero otobi otori ototo otour otter ottir ottoi ottur oture oubit oubut ouert ouir- ouoro oure- ourie outer outie outof outre outro outto rebbe reber rebet rebit rebut reefe reeft reere reeti refer refet reffe reffo refit refut reiff reoti rere- reree reret rerir rerob retee reter retie retro rette retto reuer reuet reuir reute reuti ri-fi ribbi riber ribet ribie ribo- ribot riefe rieti rifer riife ririe riuer ro-ro robbe robbi robbo rober robie robo- robor robot robrt robte robur roero roffe rofor roiot roite rooer roofe rooft roore roote rooue rorbu rorer roteb roter rotie roto- rotor rotot rotte rotti rotto roubt rouer rouet roufe roure route routt rubbi rubee ruber rubie rubio rubof rubor ruere ruete ruffe ruffo rufi- rufie rufio rufo- ruiru ruoti ruter rutte ruutu tbeti tbtbt tbutt teber tebet tebi- tefe teffi teito teret tereu terif teroi teror terre terri terro tert- teruo teter tetr- tetri tetro tette teuto ti-ti tibbi tibbu tiber tibet tibor tibro tibur tieit tiere tieri tiero tieto tieut tiffe tiobe tiore tiout tiree tireo tirer tiret tirit tiro- tiroi tirou tirru tirur titer titii titof titou titre titte titti to-be