-tree b-e-d bbbee bd-re be-er bebed beber bedde bedee beder bedet bedub bedue bedum beebe beede beerd beete beeut bembe bemer bemet bemud berbe berde berdu bered beret berme berre berru berte berum betee beter betre bett- bette beuer beure beute brebu bredd brede bredt breed breem breer breet breme bremm brerd brere brett breu- brmmm brrrr brud- brude brued bruer bruet brume brumm brute btr-d btr-t bubbe buber budde buddu budur bumbu bumed bumme burde buret burru burte burtt burud burut buter butme butte butut d-mer dbume ddddd ddrmm ddrum debed deber debet debte debut dedde dedee deder dedur dedut deede deeme deere dembe demer demet demme demre demur derbe derde dered derm- derme derre derub derue derum deter detre dette detur deure deut- drdre dredd drede dreed drere drude drumb drumm dubee duded duder duere duerr duete duett dumme dumre durbe dured duree durer duret durre durte durtu durum dutte e-dee e-med ebbed ebber ebbet ebert ebmud ebure edder eddre edere edmed edred edrum eeeee eerde embed embee ember embud embue emede emeer emere emert emmer emmet emtee emure erbbe erber erdem erdre erdut erede erem- erere erred errtu erte erter etete etree etter etude eturu eum-u eurre mbebe mbere mbret mbube mburu mebbe medee medem meder medeu medue meede meemu meere meete membe memer merde mered merer meret merre merte merur meted meter metr- metre mette metur meudt meuer meure meute mmmmm mreru mrmet mrred mt-td mt-te mt-tm mt-tr mt-tt mtree mtume mudde muddu mumbe mumme mummu murde murdu mured muret mureu murre murru murud murum murut muted muter mutet mutum rebbe reber rebet rebud rebut redbd redde redem reder redub redur reede reeme reere remed remee remer remet remue rerde rere- reree reret rerum reted retee retem reter rette reuer reuet reume reute rmutt rubee ruber ruder ruede ruere ruete rumbe rumer rummu rurde ruter rutte ruutu tbtbt tbutt teber tebet teder teeme teemu teerd tembe tembu temed terem teret tereu terme terre tert- teter tetr- tette treed treer treet treme trere trete trett treut trubu trude trued truer trume trute ttttt tubed tuber tuder tudre tudur tumbe tumbu tumed tumut turbe turbt turem turet turre turtu turut tutee tutte tuuru u-dub uber- ubume udder udert uedem umbe- umber umbre umeer umeme ummed umred umudu urdee ureme urter urubu urutu uter- utmer utrdb utrum utter uttur utube uturu uuuuu