-tree bbbee be-er beber beebe beete beeth beeut beher behet behue berbe bereh beret berhe berre berru berte berth betee beter bethe betre bett- bette beuer beure beute beuth bheer brebu breer breet brere breth brett breu- brrrr bruer bruet brute btr-t bubbe buber bureh buret burru burte burtt burut buter buthe butte butut ebber ebbet ebert ebure eeeee ehret erbbe erber erere errtu erte erter erthe etete ether etree etter eturu eurre h-e-b he-he hebbe hebe- heber heere heete hehte herre herte herth hertu herur herut heter hethe hette hetur heuer heure heurt heute hheth hhhhh hrere hthrt htree hubbe huber hubur huere huete huhuh hurbe hureh hurre hurtt hurtu hutte huttu huuru rebbe reber rebet rebut reere reerh reeth reher rehet rehue rere- reree reret retee reter rethe rette reuer reuet reute reuth rhett rubee ruber ruere ruete rueth ruhub ruteh ruter ruthe ruthu rutte ruuth ruutu t-hub tbtbt tbutt teber tebet teeth tehee teret tereu terre tert- teter tethe tetr- tette teuhe thebe theeb theer theeu ther- there thete theth theue thre- three thret threu thrub thrue thuet thure thurt thuru thute treer treet trere trete trett treut trubu truer trute truth ttttt tuber tuhte turbe turbt tureh turet turre turtu turut tutee tutte tuuru uber- uh-ee uh-uh uhhuh uhuru urter urthe urubu urutu uter- uther utter uttur utube uturu uuuuu