-tree b-r-k bbbee be-er bebek beber beebe beeke beete beeth beeut beher behet behue beker bekke berbe bereh berek beret berhe berk- berke berre berru berte berth betee beter bethe betke betre bett- bette beuer beure beute beuth bheer brebu breek breer breet breke brere breth brett breu- brrrr bruer bruet bruke brute btr-t bubbe buber buker buket bukk- bureh burek buret burke burru burte burtt buruk burut buter buthe butke butte butut ebber ebbet ebert ebure eeeee eheke ehret ekker ekuku ekuru erbbe erber erere errtu erte erter erthe eruke eteke etete ether etree etrek etter eturu eurre h-e-b he-he hebbe hebe- heber heere heete hehte heker hekk- hekte herek herke herre herte herth hertu heruk herur herut hetek heter hethe hette hetur heuer heure heurt heute hheth hhhhh hrbek hrere hthrt htree hubbe huber hubur huere huete huhuh huker hurbe hureh hurre hurtt hurtu hutte huttu huuru k-t-b k-ute kebbe kebek keber keere kehek kehte kerek keret kerre kertu ketek keter kethe kette kheer kheth khuru khutu khuur kreek kreke krete kreuk kruth kubek kuber kueht kuheh kukur kurbu kureh kurek kurku kurre kurte kurth kuruk kuteh kuthe kutkh kutte kuttu kutur rebbe reber rebet rebut reere reerh reeth reher rehet rehue rekke rere- reree reret retee reter rethe rette reuer reuet reute reuth rhett rt-rk rubee ruber rubke ruere ruete rueth ruhub rukke ruteh ruter ruthe ruthu rutte ruuth ruutu t-hub tbtbt tbutt teber tebet tebuk teeth tehee teket tekke terek teret tereu terre tert- teter tethe tetr- tette teuhe thebe theeb theek theer theeu theke ther- there therk thete theth theue theuk thre- three thret threu thrub thrue thuet thure thurt thuru thute trbuk treer treet trere trete trett treut trubu truer truke trute truth ttttt tubek tuber tuhte tukur turbe turbt tureh turek turet turku turre turtu turut tutee tutku tutte tuuru uber- uh-ee uh-uh uhhuh uhuru ukeke ukert urker urkut urter urthe urubu urutu uter- uther utkhu utter uttur utube uturu uuuuu