-tree b-e-d bbbee bd-re be-er bebed bebel beber bedde bedee bedel beder bedet bedle bedub bedue beebe beede beeld beele beerd beete beeut belde beled belee belet bellb belle belue belur belut berbe berde berdu bered berel beret berle berre berru berte betee betel beter betle betre bett- bette betul beuer beule beure beute bledd blede bleed bleer bleet blere blete bleue blude blued bluer bluet blurb blure blurr blurt brebu bredd brede bredt breed breel breer breet brell brerd brere brett breu- brrrr brud- brude brued bruer bruet brule brull brute btr-d btr-t bttld bubbe buber buble budde buddu budel budur buell bulb- bulde bull- bulle bulul bulut burde burel buret burle burru burte burtt burud burut buter butle butte butut dbtel ddddd debed debel deber debet deble debte debut dedde dedee deder dedlu dedur dedut deede deele deere deled delee deleu delle delut derbe derde dered derre derub derue deter detre dette detur deuel deule deure deut- drdre dredd drede dreed dreel drelb drell drere dreul drude dub-l dubee duble dubul duded duder dudle duele duell duere duerr duete duett duler dulle dullu dulte durbe dured duree durer duret durre durte durtu dutte e-dee ebbed ebber ebbet ebble ebell eberl ebert eblul ebull ebure edder eddre edell edere edler edlut edred edule eeeee eelde eeled eeler eerde elded eldee elder eleet elele eleut ellel eller ellet ellul elude elulu eluru elute erbbe erber erdre erdut erede erere erred errtu erte ertel erter etete etree ettel etter ettle etude eturu euell euler eurel eurre lebed lebel leber lebet ledee leder ledet ledru ledur leede leell leere leert leleu lelle lered lerer letbe letre lette letur leude lubbe lubed luber luble lubur ludde luddu luder lulle lulte lulul lurde lured lurer lurue lute- luted luter lutte rdllr rebbe rebel reber rebet rebud rebut redbd redde redel reder redub redur reede reere reled relee relet relte relue rerde rere- reree reret reted retee retel reter rette reuel reuer reuet reule reute rubee rubel ruber ruble rudel ruder rudle ruede ruele ruell ruere ruete ruled ruler rurde ruter rutle rutte rutul ruule ruutu tbtbt tbutt teber tebet teder teeld teele teell teerd telde tele- teler teleu tell- telle teret tereu terre tert- tetel teter tetle tetr- tette tlell tlett tllbr treed treer treet trele trere trete trett treut trubu trude trued truel truer trule trull trute ttttt tubed tuber tubul tudel tuder tudle tudre tudur tuell tuelt tulet tulle turbe turbt turel turet turle turre turtu turul turut tutee tutel tutle tutte tuuru u-dub ubble uber- uddel udder udell udert udler udult ullet ullur ultre ululu uluru urdee urelu urled urtel urter urtlu urubu urutu uter- utrdb utter uttur utube uturu uuuuu