-tree bbbee be-er beber beebe beete beeut bembe bemer bemet beppe beppu berbe beret berme berre berru berte berum betee beter betre bett- bette beuer beure beute bmp-r brebu breem breer breet breme bremm brere brett breu- brmmm brrrr bruer bruet brume brumm brute btr-t bubbe buber bumbu bumme bumpe buret burru burte burtt burut buter butme butte butut ebber ebbet ebert ebure eeeee eepee embee ember embue emeer emere emert emmer emmet empee empte emtee emure epptb epure erbbe erber erem- erept erere errtu erte erter erump erupt etete etree etter eturu eum-u eurre mbebe mbere mbret mbube mburu mebbe meemu meere meete membe memer merer meret merre merte merur meter metr- metre mette metup metur meuer meure meute mmmmm mpret mreru mrmet mt-te mt-tm mt-tp mt-tr mt-tt mtepe mtree mtume mumbe mumme mummu muppu muret mureu murre murru murum murup murut muter mutet mutum p-rep pebre peebu peere peert peete pembe pepee peppe pept- pepup perer peret perre perte perur petbe peter petr- petre petru pette petur peure preem preme premp prete prute pter- ptere ptprb ptpre ptprm ptprr ptprt ptpru puber puett pumpe pupet puppe puree purer purre purte purum puter putre putt- putte puttu putup re-up rebbe reber rebet rebut reeme reepe reere remee remer remet remue repet reppe reprt repub reput rere- reree reret rerum retee retem reter rette reuer reuet reume reute rmutt rubee ruber rubup ruere ruete rumbe rumer rummu rumpt rupee ruper ruter rutte ruutu tbtbt tbutt teber tebet teeme teemu teepe teeup tembe tembu tempe tempt tepee tepet tepeu teppu terem teret tereu terme terre tert- teter tetr- tette treer treet treme tremp trepp trept trere trete trett treut trubu truer trume trump trupt trute ttttt tuber tumbe tumbu tumut tupee turbe turbt turem turet turre turtu turup turut tutee tutte tuuru uber- ubume umbe- umber umbre umeer umeme upeet upmet upper upput upter ureme urter urubu urupe urutu uter- utmer utrum utter uttur utube uturu uuuuu