b-e-d bbbee bd-re be-er bebed beber bedde bedee beder bedub bedue beebe beede beerd beppe beppu berbe berde berdu bered berre berru beuer beure brebu bredd brede breed breer brerd brere breu- brrrr brud- brude brued bruer bubbe buber budde buddu budur burde burru burud ddddd debed deber dedde dedee deder dedur deede deepe deepp deepu deere depue derbe derde dered derre derub derue deure drdre dredd drede dreed dreep drepe drere drude drupe dubee duded duder duere duerr dueup duped duper durbe dured duree durer durre e-dee ebbed ebber ebure edder eddre edere edred eeeee eeped eepee eerde epure erbbe erber erdre erede erere erred eurre p-rep pebre pedee peebu peedu peere pepee peppe pepup perde perdu perer perre perur peude peure prede prepd prude puber pudde puder pudur puppe pured puree purer purre re-up rebbe reber rebud redbd redde reder redub redup redur reede reepe reere reppe repub rerde rere- reree reuer rubee ruber rubup ruder ruede ruere rupee ruper rurde u-dub uber- udder upedu upped upper urdee urubu urupe uuuuu