bbbb bbeb bbet bblb bebb bebe bebo beeb beef beel beer beet befe beff befo beft bele bell belo belt belu beo- beof beor beot bere bero berr bert beru bete beto bett betu beur bffl bftt blbt bleb blee bleo blet bleu blob bloo blot blou blub blue bluf blur blut bobb bobe bobo bobu boee boef boel boeo boer boet bofe boff bofu bole boll bolo bolt bolu boob booe boof bool boor boot bor- bore borf boro borr bort boru botb bote boto bott boue bouf boul bour bout breb bree bref brel breo brer bret brfu brob broe brol broo bror brot brou brrr brue brut btob btor btrt bttb bubb bube bubo bubu buel buer bueu bufe buff bufo bufr bulb bule bull bult bulu buol bur- burb bure burl buro burr burt buru but- bute buto butt ebbo ebbr ebel eber eboe ebol eboo ebor ebro ebru ebul ebur eeee eefe eefl eele eero eete eetu efbr efeo efet efor eft- eftu el-b elbe elbo elbu elee elef eleo eler elet elfe elft elle ello ellu elro elte elto elue elul eole eolo eore eorl eoto erbb erbe ereb erel erer eret erft erle erll erob eroe erol eroo erre erro ertl ertu erub erur etbr etee etel eter etfb etfe etoe etre etro ette etto ettu euer eule eur- eure euro eurt fble febo feeb feel feer feet fefe feff fefo fele felf fell felo felt feof ferb fere fero ferr fert feru fete fetr fett fetu ffee ffff ffrr fftf flee fler flet flob floe floo flor flot flou flub flue fluf fluo flur fobt foer fofo fole foll folo folr folt foof fool foot for- forb fore forl foro forr fort fote foto fott foul four fout free freo fret frob froe frol frot frou frub frue ft-l fter ftlb ftub fubb fubu fuel fuet fuff fufu fule full fulu fuor fur- fure furl furo furr furt fute futo futu lblr lbrt le-u lebo lebu leef leel leer leet lefe leff left lele lell lelo lelu leof leor leou lere lero lert lete leto lett leur llef llet lleu llll lloo lob- lobb lobe lobo loeb loeu lofe loff loft lole loll lolo loob looe loof lool loor loot lore loro lote lotl loto lotr lott loue loul lour lout louu lrrr ltbf ltbl ltee lttr lube luef luer lufe luff luft lufu lule lull lulu lure lurt lute o-eo obbo obel ober obet oble oblu oboe obol obor obot obre obro oele oere oeuf ofer off- offe offo offr offu ofor ofre olbo ole- olef oleo oler olet olfe olle ollo olof olor olot oltu olur oobe ooer ooff oolo oooo oore oort ootb orbb orbe orbo orbu ore- oreb orel oreo orer orfe orff orfu orle orlo orlu oro- oroe orof oror orot orro orte orto orub otee oter oto- otoe otof otoo otor otre otro otte otto ottu otur ouer oufe ouff oule oulu our- oure ouro ourt out- outb oute outo ouu- rbbb rbbr rble rebb rebe rebo rebu reeb reef reel reet refe reff refl refr reft refu relb rele rell relo relt reof reol reot reou rere rero rert reru rete reto retr rett reue reuf reul reut reuu rfef rffl rlee rlef rleu rob- robb robe robo robt robu roel roer roet rofe roff rofl rofo role rolf roll rolo rolt roob roof rool roor root rore roro rort roru rote rotl roto rotr rott roub roue rouf roul rout rrle rrrr rtbf rtee rtfb rtle rtlt rubb rube rubu ruel ruer ruet rufe ruff rufo ruft rule rull rulo rure ruro ruru rute rutl ruto rutt rutu tbrb tebo tebu teef teel teer teet teff tefl teft tel- tele tell telo telt telu teor ter- tere terf tero terr teru tete teto tetr tett tetu teut tfeb tfot tobe tobo tobt tobu toee toer toet toff tofo toft tofu tol- tole toll tolo tolt tolu toof tool toor toot tore torf toro torr tort toru tote toto totr tott toul tour tout tre- tree tref treo tret treu trfr troe troo trot trou trte trtr trub true trut truu ttbb tteo tter ttff ttoe tttt ttul tubb tube tubo tubr tubu tuel tuer tuet tufe tuff tufo tuft tufu tule tull tulo tulu tuor turb ture turf turo turr turt turu tute tutl tuto tutt tutu tuuo ubbe ubbo uber ubet uble ublo ubtf uele uell ufel ufer uffe uleb ulee uleo ulfe ulft ulle ullo ullr ulo- ulto ultt ulul uofl uofo uor- uore urbe ure- uret urfe urff urft urle uro- urol uroo urre urte urur urut utel uter utfo utor utto uttu uulu uutf uuuu