bbbb bbeb bblb bbpr bebb bebe bebo beeb beef beel beep beer befe beff befo bele bell belo belp belu beo- beof beor bepo bere bero berr beru beur bffl bfpo bfpp bleb blee bleo bleu blob bloo blop blou blub blue bluf blup blur bobb bobe bobo bobu boee boef boel boeo boep boer bofe boff bofu bole boll bolo bolu boob booe boof bool boop boor bope bopp bor- bore borf boro borr boru boue bouf boul boup bour bpel bpfl bpoe breb bree bref brel breo brep brer brfu brlp brob broe brol broo bror brou brrr brue brup bubb bube bubo bubu buel buer bueu bufe buff bufo bufr bulb bule bull bulu buol bur- burb bure burl buro burp burr buru ebbo ebbr ebel eber eboe ebol eboo ebor ebpo ebro ebru ebul ebur eeee eefe eefl eele eero efbr efeo efor el-b el-p elbe elbo elbu elee elef eleo eler elfe elle ello ellu elpe elro elue elul eole eolo eore eorl epee eper eple epll epol epor eppo eppp eprb epro eprp epub erbb erbe ereb erel erer erle erll erob eroe erol eroo erpe erre erro erub erur euer eule eur- eure euro fble fbop febo feeb feel feer fefe feff fefo fele felf fell felo feof ferb fere fero ferr feru ffee ffff ffrr flee fler flob floe floo flop flor flou flub flue fluf fluo flur foer fofo fole foll folo folr foof fool fopp for- forb fore forl foro forr foul foup four fprf free freo frep frob froe frol frop frou frub frue fubb fubu fuel fuff fufu fule full fulu fuor fur- fure furl furo furr lblr le-u lebo lebu leef leel leep leer lefe leff lele lell lelo lelu leof leor leou lepe lepo lepp lere lero lerp leur llef lleu llll lloo lob- lobb lobe lobo loeb loeu lofe loff lole loll lolo loob looe loof lool loop loor lope lopp lopu lore loro loue loul loup lour louu lpfp lppl lprp lrpu lrrr lube luef luer lufe luff lufu lule lull lulu lupe lupo lupu lure luup o-eo obbo obel ober oble oblu oboe obol obor obre obro oele oere oeuf ofer off- offe offo offr offu ofor ofre olbo ole- olef oleo oler olfe olle ollo olof olor olpe olur oobe ooer ooff oolo oooo oore opel opep oper ople opo- opor oppo orbb orbe orbo orbu ore- oreb orel oreo orer orfe orff orfu orle orlo orlu oro- oroe orof oror orpe orro orub orup ouer oufe ouff oule oulu oupe our- oure ouro ouu- pblu pbrf pebl peel peep peer peff pel- pelb pele pelf pell pelo pelu peor peou pepe pepo per- pere perf perl pero perp perr peru peul peur pfff pffr plbr ple- pleb plee pleo pleu plff plob ploo plop plou plpp plue plup plur pobo poel poer poff pole poll polo polu poof pool poop poor pop- pope popo popp porb pore poro porr pouf poul poup pour pper pple pplo pppo pppp pprf ppru ppur pre- preb pree pref prel prep preu prle prlr pro- prob proe prof prol proo prop prou prue pruf pruu pu-e pube publ pubu puel pueo puer pueu puff pule pull pulo pulp pulu pupe pupl pupu pur- purb pure purl puro purp purr puru rbbb rbbr rble rebb rebe rebo rebu reeb reef reel reep refe reff refl refr refu relb rele rell relo relp reof reol reop reou repe repl repo repp repr repu rere rero reru reue reuf reul reup reuu rfef rffl rlee rlef rleu rob- robb robe robo robu roel roer rofe roff rofl rofo role rolf roll rolo rolp roob roof rool roop roor rope ropo rore roro roru roub roue rouf roul roup rpob rpoe rpof rrle rrrr rubb rube rubp rubu ruel ruer rufe ruff rufo rule rull rulo rupe rupp rure ruro rurp ruru u-rp ubbe ubbo uber uble ublo uele uell ufel ufer uffe ufpb uleb ulee uleo ulfe ulle ullo ullr ulo- ulul uofl uofo uor- uore upbe uplb uplo upor uppe uppp uppu upup urbe ure- urfe urff urle uro- urol uroo urpo urre urup urur uulu uuuu