bbbee be-er be-ro bebel beber beblo beebe beele belbo belee bellb belle bello berbe berel berle berlo berob beroe beror berre bleer blere bloor blorb blore bo-bo boble bobr bobre boeol boero bolbe bolel boleo boler boll- bolle bollo booer boole boore borbo boree borel borer borle boro- boroo borre borro breel breer brell brelo breo- brere brobo broer brole broll brolo brool brrrr ebber ebble ebell ebelo eberl eeeee eeler elele eleo- ellel eller elloe eloee elole eloor elore eloro elrob eorre erbbe erber erere eroor erore errol error lebel leber leell leere lelle lerer lobbe lobbo lober loble lobo- lobor loler lollo lolol looer loore lorel loreo lorer lorre o-r-b obele obole obolo oboro obreb oerel oerle oleo- olere olleo oller oo-er ooooo orble orell oreo- orere orero orobe orobo oroer rebbe rebel reber rebol reere relee rello rere- reree rerob ro-ro robbe robbo rober roble robo- robor roell roero roleo rolle rollo rooer roole roore rorer