-tree bbbee be-er be-ro beber bebot beebe beete bejte beote berbe beret berob beroe beror berre berte berto betee beter betoo betor betre bett- bette betto bo-bo bobet bobr bobre boero bojer booer boore boort borbo boree borer boret borje boro- boroo borot borre borro botet botro botte breer breet brejo breo- brere breto brett brobo broer broje broto brrrr btr-t ebber ebbet ebert eeeee eorre erbbe erber erere eroor erore eroto error erte erter etete etoro etree etter jebet jeroo jerre jerte jetee jeter jette jetto jobbe joe-e jooto joree jotto o-r-b obbet obejo obert obete objet oboro obote obreb oerje oo-er ooooo orbot oreo- orere orero orobe orobo oroer orret orter ortet ortoo otere otero ototo otter rebbe reber rebet reere rejto rere- reree reret rerob retee reter retje retro rette retto ro-ro robbe robbo rober robo- robor robot robrt robte roero rooer roore roote rorer roteb roter roto- rotor rotot rotte rotto rtejr tbtbt teber tebet teret terje teror terre terro tert- teter tetr- tetro tette tjore to-be tobbe tober tobet tobor tobot tobre toerr toeto toobe toore torbe toreo toret torje torob torre torro torte torto toter toto- totoe totoo totte treer treet trejo trere trete trett troee trott ttttt