orer orfe orff orfi orfu ori- orie orif oril orio orit orle orlo orlu oro- oroe orof oror orot orri orro orte orto otee oter otif otit oto- otoe otof otoo otor otre otro otte otti otto ottu otur ouer oufe ouff ouie ouii ouir ouit oule oulu our- oure ouro ourt out- oute outi outo ouu- reef reel reet refe reff refi refl refr reft refu reif reii reil reir reit reiu rele rell relo relt reof reol reot reou rere reri rero rert reru rete reti reto retr rett reue reuf reul reut reuu rfef rffl rief riel rier riet rieu rife riff rift rifu riif rile rill rilo rilu riol riot riou rire riri rite riti ritl rito ritt ritu riue rlee rlef rleu rlif roel roer roet rofe roff rofl rofo roif roil roio roir roit roiu role rolf roll rolo rolt roof rooi rool roor root rore rori roro rort roru rote roti rotl roto rotr rott roue rouf roul rout rrif rrle rrrr rtee rtei rtle rtlt ruel ruer ruet rufe ruff rufo ruft ruif ruit rule rull rulo rure ruri ruro ruru rute ruti rutl ruto rutt rutu teef teel teer teet teff tefi tefl teft teie teil teir teiu tel- tele teli tell telo telt telu teor ter- tere terf teri tero terr teru tete teti teto tetr tett tetu teut tfot tie- tiee tief tiei tiel tieo tier tiet tiff tifo tift tiit tiiu tile till tilo tilr tilt tiou tire tiri tirl tiro tirr tiru tite titi tito titt titu tlli toee toei toer toet toff tofi tofo toft tofu toie toil toit tol- tole toli toll tolo tolt tolu toof tool toor toot tore torf tori toro torr tort toru tote toti toto totr tott toui toul tour tout tre- tree tref trei treo tret treu trfr tri- trie trif tril trio trit troe troi troo trot trou trte trtr true trut truu tteo tter ttff ttoe tttt ttul tuei tuel tuer tuet tufe tuff tufi tufo tuft tufu tuil tuit tuiu tule tuli tull tulo tulu tuor ture turf turi turo turr turt turu tute tuti tutl tuto tutt tutu tuuo u-ie ueir uele ueli uell ufel ufer uffe uile uirr ulee uleo ulfe ulft ulie ulle ulli ullo ullr ulo- ulti ulto ultt ulul uofl uofo uor- uore ure- uret urfe urff urfi urft urie urif uriu urle uro- urol uroo urre urri urte urur urut utel uter utfo util utor utri utti utto uttu uulu uuri uutf uuuu

-tree e-fit eeeee eeler eerie eetti ef-tu efere eferi efetf effer effet effie effio efile efore efrei eftel efter efuru efutu eieio eifel eiler eilet eillo eilot eirie eitel eiter eitri eleet elele eleo- eleot eleri eleut eliel elife eliot elite ellel eller ellet ellie ellio elloe ellul eloee eloff eloie eloit elole eloor elore eloro elote elout elrio eltio eltro elulu eluru elute eofor eoile eolie eorre erere erier eriff erio- eriol erite eritu eroor erore eroto errol error errtu erte ertel erter ertil etete etile etio- etite etoll etool etoro etour etree ettel etter ettie ettle eturu euell euler eurel euro- eurre feele feeor feere fefor feier feile felet feliu felle felli felte feltt feoff feole ferel feret ferie ferio ferit ferle ferlo ferr- ferre ferri ferro ferte fetel feter feti- fetii fetir feto- fetor fette feuer feule feute ffeil fieee fieri fiero fifer fifie filer filet fili- fille fillo filot filtu filur fiole fiore fiori firee firei firer firie firit firle firou firre fitel fitil fitit fitof fitor fitou fitri fitte fitto fleer fleet fleil fleir flere flero flert flete flett fleur flier flire flirr flirt flite floor flore floro floru flote floto flour flout fluff fluit fluo- fluor flure flurr flurt flute foeti foile foir- foire folet folie folio folle folli follo foloi foole fooli foore foote footi fore- forel foreo foret forio forit forli forro forte forti forto forur fotte fotui fotur fouee fouel fouet foule foure fouro freei freel freer freet freir freit frere frett freur friel frier frile frill friol frite frito fritt froit froot frore frote fruit fruli frute fruto ftlee ftrtt fu-fu fuero fuite fulle fullf fullo furel furie furil furio furir furo- furor futur ieiri ierei ieroe iette if-- ifeel ifell ifelt ifere iffet iffou ifill iflee ifrit ifttt iiiee iiiii iitti ileft ileo- ileri ilife iliff ilift ilio- iller illit illui ilori ilote ilter iltur ilulu ioffe ioooi ioooo iorio iotit iotti irele irete iriel irill irite irori irour irrel irrit irule itele itell itero itete itfet itfit itfor itire itoff itour itout ittel itter ittoo ittre ittti itu-r itu-t ituri ituro ituru itutu iuliu iurie leeli leell leeof leere leert lefeu leffe lefou leful leile leill leio- leire leiro leite lelei leleu lelio lelle lelli leoii leoti lerer lerie leroi lerot letil letit letot letre lette letto letur leuro li-fi lieli lieof liere liero lieto lieut lifei lifer liffe lifie lifou lilet lilfu lilie liliu lille lilli lillo lilou liour liril lirio lirot lirui litel liter litir litre litte litti litui liule liuli liure lo-fi loeil loeri lofer loffe lofoi lofou lofte loilo loire lolei loler lolif lolli lollo lolol lolti looer looft looie loore loote lorel loreo lorer loret lorie lorio lorre lorri lorut lotio lotof lotor lotru lotte lotti lotto louer louie louit loule loure louri louro ltifr lufre lufte luife luiff luire luiro luite lulle lulli lulte lulul lurer lurie lurio lurue lute- luteo luter lutfi lutol lutte lutto lutui luuri o-fer oeiro oelet oerel oerle ofeli offer offie offir offit offof offre offto oflie ofoil ofori ofoto ofour oftel ofter oiler oilet oilit oille oilof oirot oitti olei- oleo- olere olier olife oliff olite oliue ollei olleo oller ollie ollio ollur olofi olotu olour oltet oltre oo-er ooioo oolie ooooo oorie orell oreo- oreoi orere orero orfei orfeo orfeu orfoe orfor orful oriel orill oriol orito orlet oroer orolu orout orret orter ortet ortoo oruro orutu otell otelo otere oteri otero otile