-tree bbbee be-er be-ro bebel beber beblo bebot beebe beeft beele beete beffe befoe befol befor belbo belee belef belet bellb belle bello belot beofe beoff beote berbe berel beret berle berlo berob beroe berol beror berre berte berto betee betel beter betle betoo betor betre bett- bette betto bleer bleet bleft blere blete bloef bloor blorb blore blort blote bloto blott bo-bo bobet boble bobr bobre boeol boero bofet boffo bolbe bolel boleo boler bolet boll- bolle bollo bolte bolto booer boole boore boort borbo boree borel borer boret borle boro- boroo borot borre borro botel botet botro botte breef breel breer breet brell brelo breo- brere breto brett brobo broer broft brole broll brolo brool broto brrrr btr-t ebber ebbet ebble ebell ebelo eberl ebert eeeee eeler efere efetf effer effet efore eftel efter elbot eleet elele eleo- eleot ellel eller ellet elloe eloee eloff elole eloor elore eloro elote elrob eltro eofor eorre erbbe erber erere eroor erore eroto errol error erte ertel erter etete etoll etool etoro etree ettel etter ettle febel feble febre feele feeor feere fefor felet felle felte feltt feoff feole ferel feret ferle ferlo ferr- ferre ferro ferte fetel feter feto- fetor fette fleer fleet flere flero flert flete flett floor flore floro flote floto folet folle follo foole foore foote fore- forel foreo foret forro forte forto fotte freel freer freet frere frett frobe froot frore frote ft-lb ftlee ftrtt lebel leber lebet leell leeof leere leert leffe leftb lelle lerer lerot letbe letot letre lette letto lobbe lobbo lober loble lobo- lobor lofer loffe lofte loler lollo lolol looer looft loore loote lorel loreo lorer loret lorre lotof lotor lotte lotto o-fer o-r-b obbet obele obert obete obole obolo oboro obote obreb oelet oerel oerle offer offof offre offto ofoto oftel ofter oleo- olere olleo oller oltet oltre oo-er ooooo orble orbot orell oreo- orere orero orfeo orfoe orfor orlet orobe orobo oroer orret orter ortet ortoo otell otelo otere otero otole otolo ototo otter rebbe rebel reber rebet rebol reefe reeft reere refel refer refet reffe reffo relee relet rello relot relte rere- reree reret rerob retee retel reter retro rette retto ro-ro robbe robbo rober roble robo- robor robot robrt robte roell roero rofel roffe rofor roleo rolfe rolfo rolle rollo rooer roofe rooft roole roore roote rorer roteb rotel roter rotfl rotle roto- rotol rotor rotot rotte rotto tbolt tbtbt teber tebet teele teell tefe tele- teleo teler tell- telle tello telo- teolo teotl teret teror terre terro tert- tetel teter tetle tetr- tetro tette tlell tlett tllbr to-be tobbe tobel tober tobet tobol tobor tobot tobre toefl toeof toerr toeto tofet toffo tofol tofor tofte tolbo toler tolet tolle tollo toloo tolor toobe toole toolt toore torbe torel toreo toret torob torre torro torte torto totel toter totle toto- totoe totoo totte treer treet trefe treff trele trere trete trett troee trofe troff troft troll trott ttttt