-form bbbee be-er be-ro beber bebop beebe beffe befoe befor befur bembe bembo bemer beofe beoff beour bepop beppe beppo beppu berbe berme bermo berob beroe berom beror berre berru berum beuer beure bmp-r bo-bo bobr bobre bobup boeme boero boeuf boeur boffo bombe bombo bomer bomme booer boomb boomf boore booru borbo boree borer bormo boro- borom boroo borou borre borro borum borup bouee bouer boure brebu breef breem breer breme bremm bremo breo- brere breu- brmmm brobo broer brom- brome bromo broom broue brrrr bruer bruff brume brumm bubbe buber buffe buffo bumbo bumbu bumme bumpe bumpf bumpo buroo burro burru e-pro ebber eboue ebure eeeee eepee efere effer efore efrem efuru embee ember embro embue emeer emere emmer emore empee emure eofor eomer eorre epome eprom epure erbbe erber erem- eremo erere erome eroom eroor erore error erump eubro eum-u euro- europ eurre fbomb febre feeme feeor feere fefor femme femoe femur feoff feorm ferme fermo ferr- ferre ferro feuer fofum fomor foome foore fore- foreo form- forme forro forum forur fouee foupe fourb foure fourm fouro freep freer freme fremm frere freur frobe frome fromm froom froop frore froup frume frump fu-fu fuero fumee fumer furbo furme furo- furor mbebe mbere mboro mbube mburu mebbe meebo meefe meemu meere mefor membe memer memor mempo merer mero- meroe merom meroo merop meror merre merur meuer meure meuro mmfbm mmmmm mobee mobme mobor mobro moeer moeme moere moero moffe moffo mombo mombu momme momoe mompe mooer moope moore mooro mopee moper mopup morbo moree morem morep morer morfu mormo morop moror morou morre morro morue morum morup moure mpbou mpofu mreru mrmom mroof mrorr muffe mumbe mumbo mumme mummu mumpf muppu mureu murom muror murre murro murru murum murup o-fer o-r-b oboro oboue obreb obrom oeppo oerme oerum offer offof offre ofour ofpop ofrum ombe- omber ombre omemo omero omore omoro omupo oo-er oofem oompf ooooo opepe opere opobo opper oppum opump orbom oreo- orere orero orfeo orfeu orfoe orfor ormer ormur orobe orobo oroer orome oromo orrum orube oruro oueme oumer ouoro oure- p-fem p-rep pebre peebo peebu peere pembe pepee peppe pepup perer perom perou perre perro perur peumo peure pforp po-po pobe poeme pombe pombo pomer pomme pomor pompe pompu pomum pooer poope poopo poore poper popop poppe poppo popup poreb porer poro- porro porum porur pouer pouff poume poupe poure preef preem preff preme premp preop probe probo proem proer profe proff prome promo proof proor prop- prope propp propr prore puber pubo- puero pumpe puppe puppo puree purer purmo puro- purre purum re-up rebbe reber rebop reefe reeme reemo reepe reere refer reffe reffo refme remee remer remop remor remou remue remuf reome repop repor reppe repro repub rere- reree rerob rerum reuer reume ro-ro robbe robbo rober robo- robop robor robur roero roffe rofor rombe romeo romer romfo romme rompe rompo rompu rooer roofe roome roomu roope roore rooue roper roppe rorbu rorem rorer rouer roufe roume roumm roure rperf rprop rubee ruber rubof rubor rubup ruere ruffe ruffo rufo- rumbe rumbo rumer rummo rummu rumor rumpf rumpo ruomu rupee ruper u-pop uber- ubobo ubume ufere ufofu uforb umbe- umber umbre umbro umeer umeme umore umour uouee upfor upoff upper ureme ureo- uroob urour urubu urupe uuuuu