-tree bbbee be-er be-ro beber bebot beebe beete beeth beeut beher behet behot behue beote beoth beour berbe bereh beret berhe berob beroe beror berre berru berte berth berto betee beter bethe betoo betor betou betre bett- bette betto beuer beure beute beuth bheer bhoot bhore bhour bo-bo bo-ho bobet bobr bobre boero boeur bohor bohot bohte booer boore boort booru booth borbo boree borer boret boro- boroo borot borou borre borro borth borut botet bothe botou botro botte bottu bouee bouer bouet boure boute bouth bouto brebu breer breet breo- brere breth breto brett breu- brobo broer broth broto broue brout brrrr bruer bruet brute btr-t bubbe buber buoho bureh buret buroo burro burru burte burtt burut buteo buter buthe buto- butoh butor butot butou butte butuo butut ebber ebbet ebert eboue ebure eeeee ehret eorre erbbe erber erere eroor erore eroto error errtu erte erter erthe etete ether etho- etoro etour etree etter eturu eubro euro- eurre h-e-b he-he he-ro hebbe hebe- heber heere heete hehte heore heroe herre herro herte herth herto hertu herur herut heter hethe hette hetto hetur heuer heure heurt heute hheth hhhhh hhour ho-ho ho-oh hobet hoboe hobor hobro hobub hohoe hohot hooer hoore hoort horeb horhe horre horro horru horth horto hothe hothr hotot hotte hotto houre houtu hrere hthrt htree hubbe huber hubur huere huete huhuh hurbe hureh hurre hurtt hurtu hutor hutte hutto huttu huuru o-r-b obbet obert obete obhor oboro obote oboth oboue obout obreb oerth oh-oh ohbot ohour ohrob ohrot ohthe oo-er ooher ooooh ooooo oothe orbot oreo- orere orero orobe orobo oroer orout orret orter ortet orth- orthe ortho ortoo orube oruro orutu otere otero other othou othre othur ototo otour otter ottur oture oubut ouert ouhte ouoro oure- outer outre outro outto rebbe reber rebet rebut reere reerh reeth reher rehet rehoe rehue rere- reree reret rerob retee reter rethe retro rette retto reuer reuet reute reuth rheo- rhett rhoeo ro-ro robbe robbo rober robo- robor robot robrt robte robur roero rohob rohru rooer roore roote rooue rorbu rorer roteb roter rothe rotho roto- rotor rotot rotte rotto roubt rouer rouet rouhe roure route routh routt rubee ruber rubor ruere ruete rueth ruhub ruteh ruter ruthe ruthu rutte ruuth ruutu t-hub tbtbt tbutt teber tebet teeth tehee teret tereu teror terre terro tert- teruo teter tethe tetr- tetro tette teuhe teuto thebe theeb theer theeu theo- theor ther- there thero thete theth theue thobe thore thoro thorr thort thoru thoth thour thout thre- three threo thret threu throb throe throo throt throu thrub thrue thuet thure thurt thuru thute to-be to-ho tobbe tobeh tober tobet tobor tobot tobou tobre toerr toeto toher tohoe tohot toobe toore tooth torbe toreo toret torht torob torre torro torte torto tortu torue toter tothe toto- totoe totoo totte touho toure touro toute treer treet trere trete trett treut troee troth trott troue trout trubu truer truro trute truth ttttt tuber tubo- tubou tuero tuhte tuotu turbe turbo turbt tureh turet turot turre turro turtu turut tutee tuteo tutor tutte tutto tuuru uber- ubobo uh-ee uh-oh uh-uh uhhoh uhhuh uhuru uouee ureo- uroob urour urter urthe urubu urutu utebo uter- utero uther utro- utror utter uttur utube uturu ututo uuuuu