-tree bbbee be-er be-ro beber bebot beebe beeft beete beeth beffe befoe befor beher behet behof behot beofe beoff beote beoth berbe bereh beret berhe berob beroe beror berre berte berth berto betee beter bethe betoo betor betre bett- bette betto bheer bhoot bhore bo-bo bo-ho bobet bobr bobre boero bofet boffo bohor bohot bohte booer boore boort booth borbo boree borer boret boro- boroo borot borre borro borth botet bothe botro botte breef breer breet breo- brere breth breto brett brobo broer broft broth broto brrrr btr-t ebber ebbet ebert eeeee efere efetf effer effet efore efter ehret eofor eorre erbbe erber erere eroor erore eroto error erte erter erthe etete ether etho- etoro etree etter febre feeor feere fefor feher feoff feret ferr- ferre ferro ferte ferth feteh feter feto- fetor fette foore foote fore- foreh foreo foret forro forte forth forto fotte freeh freer freet frere frett frobe froot frore frote froth ftrtt h-e-b he-he he-ro hebbe hebe- heber heere heete hefer heffe hefte hehte heore heroe herre herro herte herth herto heter hethe hette hetto hheth hhhhh ho-ho ho-oh hobet hoboe hobor hobro hoeft hofer hofte hohoe hohot hooer hooft hoore hoort horeb horhe horre horro horth horto hothe hothr hotot hotte hotto hrere hthrt htree o-fer o-r-b obbet obert obete obhor oboro obote oboth obreb oerth offer offof offre offto ofher ofoto ofter ofthe oh-oh ohbot ohfoo ohrob ohrot ohthe oo-er ooher ooooh ooooo oothe orbot oreo- orere orero orfeh orfeo orfoe orfor orobe orobo oroer orret orter ortet orth- orthe ortho ortoo otere otero other othre ototo otter rebbe reber rebet reefe reeft reere reerh reeth refer refet reffe reffo reher rehet rehoe rere- reree reret rerob retee reter rethe retro rette retto rheo- rhett rhoeo ro-ro robbe robbo rober robo- robor robot robrt robte roero roffe rofor rohff rohob rooer roofe rooft roore roote rorer roteb roter rothe rotho roto- rotor rotot rotte rotto tbtbt teber tebet teeth tefe tehee teret teror terre terro tert- teter tethe tetr- tetro tette thebe theeb theef theer theft theo- theof theor ther- there therf thero thete theth thobe thofe thoff thoft thore thoro thorr thort thoth thre- three thref threo thret throb throe throo throt to-be to-ho tobbe tobeh tober tobet tobor tobot tobre toeof toerr toeto tofet toffo tofor tofte toher tohoe tohot toobe toore tooth torbe toreo toret torht torob torre torro torte torto toter tothe toto- totoe totoo totte treer treet trefe treff trere trete trett troee trofe troff troft troth trott ttttt