-tree bbbee be-er be-ro beber bebot beebe beete bembe bembo bemer bemet beote berbe beret berme bermo berob beroe berom beror berre berte berto betee beter betoo betor betre bett- bette betto bo-bo bobet bobr bobre boeme boero bombe bombo bomer bomet bomme booer boomb boore boort borbo boree borer boret bormo boro- borom boroo borot borre borro botet botme botom botro botte breem breer breet breme bremm bremo breo- brere breto brett brmmm brobo broer brom- brome bromo broom broto brrrr btr-t ebber ebbet ebert eeeee embee ember embro emeer emere emert emmer emmet emore emote emoto emtee eomer eorre erbbe erber erem- eremo erere erome eroom eroor erore eroto error erte erter etete etoro etree etter mbebe mbere mboro mbret mebbe meebo meere meete membe memer memor merer meret mero- meroe merom meroo meror merre merte meteo meter metoo metr- metre metro mette mmmmm mobee mobme mobor mobot mobro moeer moeme moere moero mombo momme momoe momot mooer moore mooro moote mooto morbo moree morem morer moret mormo moror morre morro morte moter motet moto- motor motre motte motto mrmet mrmom mrorr mt-te mt-tm mt-tr mt-tt mtoto mtree o-r-b obbet obert obete oboro obote obreb obrom oerme ombe- omber ombre omemo omero omore omoro omoto oo-er ooooo orbom orbot oreo- orere orero ormer ormet orobe orobo oroer orome oromo orret orter ortet ortoo otere otero otmer otome otomo ototo otter ottom rebbe reber rebet reeme reemo reere remee remer remet remor reome rere- reree reret rerob retee retem reter retro rette retto ro-ro robbe robbo rober robo- robor robot robrt robte roero rombe romeo romer romme rooer roome roore roote rorem rorer roteb rotem roter roto- rotor rotot rotte rotto tbtbt teber tebet teeme tembe tembo temoe teome terem teret terme termo teror terre terro tert- teter tetr- tetro tette to-be tobbe tober tobet tobor tobot tobre toerr toeto tombe tombo tomer tomme tommo tomo- tomoe tomom tomor tomte toobe toome toore torbe toreo toret torme torob torre torro torte torto totem toter toto- totoe totoo totte treer treet treme trere trete trett troee trome tromm trott ttttt