bbbee be-er be-ro bebel beber beblo bebop beebe beele belbo belee belep bellb belle bello belue belur beour bepop beppe beppo beppu berbe berel berle berlo berob beroe berol beror berre berru beuer beule beure bleep bleer blere blerp bleue bloop bloor blorb blore blorp bloue bluer blurb blure blurr bo-bo boble bobr bobre bobup boeol boero boeur bolbe bolel boleo boler boll- bolle bollo bollu booer boole boore booru borbo boree borel borer borle boro- boroo borou borre borro borul borup bouee bouel bouer boul- boule boulo boure brebu breel breer brell brelo breo- brere breu- brobo broer brole broll brolo brool broue brrrr bruer brule brull bubbe buber buble buell bulb- bull- bulle bulou bulul burel burle burol buroo burro burru e-pro ebber ebble ebell ebelo eberl eblul eboue ebull ebure eeeee eeler eepee el-op elele eleo- ellel eller elloe ellul eloee elole eloor elope elore eloro elpee elper elrob elubo elulu eluru eorre epoll epulo epure erbbe erber erere eroor erore erpel errol error eubro euell euler eurel euro- europ eurre l-pop lebel leber leell leere lelep leleu lelle lepel leper lepo- lepor leppe lepre lerer leupp leuro lobbe lobbo lober loble lobo- lobor loler lollo lolol loobu looer loore loper lopou lorel loreo lorer lorre lorup louer loule loupe loure louro lubbe luber luble lubur luebo lulle lulul luper luppe lupul lurer lurue lurup o-r-b obele obole obolo oboro oboue obreb oeppo oerel oerle oleo- olere olleo oller ollup ollur olour oo-er ooooo opele opelu opepe opere oploo opobo opole oppel opper oppol orble orell oreo- orere orero orlop orobe orobo oroer orolu orube oruro oullo ouoro oure- ourol p-rep pebre peebo peebu peele peell peere peerl pelbo pelee peler pelle pello pelo- peloe pelor pelou peole pepee pepel peple peppe pepup perel perer perle perlo perou perre perro perur peule peure plebe pleep plelo pleo- ploop plopp plopu plore plupp po-po pobe poele polbo poler polle pollo pollu poloe polop polur pooer poole poope poopo poore popel poper pople poplr popop poppe poppo popup poreb porer porle poro- porro porur pouer poule poulp poupe poure prell prelp preop prepl probe probo proer prole proll prolo proor prop- prope propl propp propr prore puber puble pubo- puelo puero puleo puler pull- pulle pullu puple puppe puppo puree purel purer purle puro- purre purul re-up rebbe rebel reber rebol rebop reepe reere relee rello relue repel reple repop repor reppe repro repub rere- reree rerob reuel reuer reule ro-ro robbe robbo rober roble robo- robop robor robur roell roero roleo rolle rollo rooer roole roope roore rooue roper roppe rorbu rorer rouer roule roull roure rprop rubee rubel ruber ruble rubor rubup ruele ruell ruere ruler rullo rupee rupel ruper ruule u-pop ubble uber- ubobo ullur uloop ulpur ululu uluru uouee upolo upolu upper urelu ureo- uroob urour urubu urupe uuuuu