-tree bbbee be-er be-ro beber bebot beebe beete beeth beher behet behot 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 bohor bohot bohte booer boore boort booth borbo boree borer boret boro- boroo borot borre borro borth botet bothe botro botte breer breet breo- brere breth breto brett brobo broer broth broto brrrr btr-t ebber ebbet ebert eeeee ehret eorre erbbe erber erere eroor erore eroto error erte erter erthe etete ether etho- etoro etree etter h-e-b he-he he-ro hebbe hebe- heber heere heete hehte heore heroe herre herro herte herth herto heter hethe hette hetto hheth hhhhh ho-ho ho-oh hobet hoboe hobor hobro hohoe hohot hooer hoore hoort horeb horhe horre horro horth horto hothe hothr hotot hotte hotto hrere hthrt htree o-r-b obbet obert obete obhor oboro obote oboth obreb oerth oh-oh ohbot ohrob ohrot ohthe oo-er ooher ooooh ooooo oothe orbot oreo- orere orero orobe orobo oroer orret orter ortet orth- orthe ortho ortoo otere otero other othre ototo otter rebbe reber rebet reere reerh reeth 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 rohob rooer roore roote rorer roteb roter rothe rotho roto- rotor rotot rotte rotto tbtbt teber tebet teeth tehee teret teror terre terro tert- teter tethe tetr- tetro tette thebe theeb theer theo- theor ther- there thero thete theth thobe thore thoro thorr thort thoth thre- three threo thret throb throe throo throt to-be to-ho tobbe tobeh tober tobet tobor tobot tobre toerr toeto toher tohoe tohot toobe toore tooth torbe toreo toret torht torob torre torro torte torto toter tothe toto- totoe totoo totte treer treet trere trete trett troee troth trott ttttt