bbbee be-er be-ro beber beebe beene beffe befoe befor befur bene- benfe benne benno bennu benon benue benun benur beofe beoff beone beorn beour berbe beren berne berno berob beroe beror berre berru berun beuer beuno beure bo-bo bobr bobre boero boeuf boeun boeur boffo boner bonne bonon bonou booer boone boore boorn booru borbo boree boren borer born- borne borno bornu boro- boron boroo borou borre borro borun bouee bouer boune boure bourn brebu breef breen breer brene brenn breno breo- brere breu- brobo broer bronn broon broue broun brrrr bruen bruer bruff brune brunn bruno bruun bubbe buben buber bubon bueno buffe buffo bunne bunun buono buren burn- burne buron buroo burro burru burun e-one ebber ebene ebern ebner ebone eboon eboue ebron ebure eeeee eener efere effer efore efren efron efuru enbun enero enfer enfeu ennor enone enore enorn enron enuff enure enurn eofen eofor eorne eorre erbbe erben erber ereen erere ernen erone eroor erore erron error eubro eunoe euro- eurre febre feeor feere fefor fener feneu fenne fenno fenoe fenor feoff feren ferno feron ferr- ferre ferro feuer foner fonne foone foore fore- foren foreo forne forno forro forur fouee fourb foure fouro freer freon frere freur frobe frore frorn fu-fu fuero funen fuorn furbo furen furo- furor neber nebro neere nefen nefer neffe nefre nenno neofe neore nerbo neree nereo neron nerre nerur neuen neuer neueu neune neuou neur- neure neuro nnebe nnooo no-no nobbe nobob noboe nobre nobuo noerr nofee nofor nofou nofun non-u nonne nonno noone noonu norbu noren norne noron norro norun noune nroff nu-nu nueno nunon nunun nuoro nure- nurun o-bon o-fer o-r-b oboro oboue obreb obren obrne oefun oeno- oenoe offen offer offof offon offre offun ofone ofono oforn ofour onebe onene oneno oneof oneon oneor onere onero onne- onnen onoff onone onoon onore onorn onour oo-er ooooo oouen oreo- orere orero orfeo orfeu orfoe orfor ornee ornon orobe orobo oroer orono orube orune oruro ouene ouoro oure- ouren ourne ourno rebbe reber rebon rebun reefe reene reere refen refer reffe reffo refne renee rener renfe renne renno reno- renou reone rere- reree rerob rerun reuen reuer reune ro-ro robbe robbo roben rober robo- robon robor robun robur roero roffe rofor ronee ronen roneo ronne ronno rooer roofe roone roore rooue rorbu rorer rouen rouer roufe roune roure rubee ruben ruber rubof rubon rubor ruere rueun ruffe ruffo rufo- runer runne runo- runof runon ubeen uber- ubobo ufere ufofu ufone uforb unfoe unfun unfur unnun unnur unoor unorn unref unrun unurn uouee ureo- uroob urour urubu uuuuu