-tree bbbee bcell be-er be-ro bebel beber beblo bebot becco becel beebe beele beete belbo belce belec belee belet bellb belle bello belot beote berbe berec berel beret berle berlo berob beroe berol beror berre berte berto betee betel beter betle betoo betor betre bett- bette betto bleer bleet blere blete bloor blorb blore blort blote bloto blott bo-bo bobet boble boboc bobr bobre bocce bocet bocle bocor boece boeol boero bolbe bolel boleo boler bolet boll- bolle bollo bolte bolto booce booco booer boole boore boort borbo borce borec boree borel borer boret borle boro- boroo borot borre borro botel botet botro botte brece breel breer breet brell brelo breo- breoc brere breto brett brobo broce broer brole broll brolo brool broto brrrr btc-e btr-t c-cor c-tec ccccc ccell ccett ccrcl ccrel cctrl cebec ceber ceco- ceele ceelo ceere celco celeb celer cell- celle cello celo- celte ceoce ceoor ceorl cerc- cerce cerco cerec cerer ceret cero- ceroc cerre cerro certe ceto- cette cleco cleer cleet clerc clere clete cleto clett cloob cloor cloot clore clort clote co-bo co-co cobbe coble cobol cobot cobre cocc- cocce cocco coceo cocle cocol cocto coel- coelo coete cole- colee colel coleo coler colet coll- colle collo colo- color colre cooee cooer coole coolo coore coote corbe corbo corce core- coree corel corer coro- corol corot corre corrl corte corto cotel coter cotle cott- cotte cotto crebe crece creel creer crele crell creo- creot crete croce croco croll crooe crool croot crore crote crott crrel ctree ctrlc ctrol cttee ebber ebbet ebble ebell ebelo eberl ebert eccle ecole ecolo ecto- ector ectot eeeee eelco eeler elbot elcor elcot elect eleet elele eleo- eleot ellel eller ellet elloe eloee elole eloor elore eloro elote elrec elrob eltro eorre erbbe erber ercol erect erere eroor erore eroto errol error erte ertel erter etete etoll etool etoro etree ettel etter ettle lebce lebec lebel leber lebet lecce lecco leece leeco leell leere leert lelle lerer leroc lerot letbe letot letre lette letto lobbe lobbo lobec lober loble lobo- lobor loco- locro loler lollo lolol looce looer loore loote lorel loreo lorer loret lorre lotec lotor lotte lotto ltcol o-r-b obbet obele obert obete obole obolo oboro obote obreb ocelo ocllo ocoee ocote ocr-b ocree octet octo- octol octor oeco- oelet oerel oerle oleo- olere olleo oller oltet oltre oo-er oocre ooooo orbec orble orbot orcet oreco orell oreo- orere orero orlec orlet orobe orobo oroco oroer orret orter ortet ortoo otcbb otell otelo otere otero otoce otole otolo ototo otter r-co- rcolo rebbe rebec rebel reber rebet rebol recce recco recet rect- recte recto reece reere relee relet rello relot relte rere- reree reret rerob retee retel reter retro rette retto ro-ro robbe robbo robec rober roble robo- robor robot robrt robte rocco rocor roell roero roleo rollc rolle rollo rooer roole roore roote rorer roteb rotel roter rotle roto- rotol rotor rotot rotte rotto tbolt tbtbt tcell tcobb teber tebet tectb teele teell telce telco tele- telec teleo teler tell- telle tello telo- teoco teolo teotl terce terco teret teror terre terro tert- tetel teter tetle tetr- tetro tette tlell tlett tllbr to-be tobbe tobel tober tobet tobol tobor tobot tobre tocco toco- toece toerr toeto tolbo toler tolet tolle tollo toloo tolor toobe toole toolt toore torbe torce torel toreo toret torob torre torro torte torto totel toter totle toto- totoe totoo totte trboc treco treer treet trele trere trete trett troco troee troll trott ttttt