-ene bbbb bbeb bblb bebb bebe beeb beel beem been beer bele bell belm belu beme bemu bene benn benu bere berm bern berr beru beur bleb blee blem bleu blme blub blue blum blur bner bnml bnrr breb bree brel brem bren brer brrm brrr brue brum brun bubb bube bubu buel buem buen buer bueu bulb bule bull bulu bum- bumb bunb bune bunn bunu bur- burb bure burl burm burn burr buru ebbr ebel eben eber ebru ebul ebur eeee eele el-b elbe elbu elee elem elen eler elle ellu elme elml elne elue elul elum embe embr emel emen emer emeu emle emlm emme emml emmu emne emre emul enb- enbn enbr enee enel enem ener enne ennu enue enum enur erbb erbe ereb erel erem eren erer erle erll erme erne erre erub erum erur euer eule eur- eure lblr le-u lebu leel leem leen leer lele lell lelu leme lemm lemu lene lenn lere lerm lern leun leur lleu llll lmln lmmr lner lrne lrrr lube luer lule lull lulu lumb lume lune lunn lure mebe meel meem meen meer mel- melb mele mell meme meml memr memu men- mene menn menu mer- merb mere merl merm mern meru meum mlle mlnr mmen mmmm mmun mnbb mnem mrbb mrbm mreb mree mren mrln mrml mube muee muel mule mull mulm mulu mume mumm mumu mune munn munu mure murl murn murr muru nber nebb nebe nebn nebr nebu neeb neel neem neen neer nele nell nem- neme nemn nemu nene nenu nere nerl nerm nerr neru neue neum neun neur neuu nler nlrb nm-e nmml nnnn nrem nren nrlb nrml nrrl nube nubl nuee nuel nuer nule null numb nume numm numu nune nunn nure nurl nurn nurr nuru rbbb rbbr rble rebb rebe rebu reeb reel reem reen relb rele rell relm reme remn rene renn renu rere reru reue reul reuu rlee rleu rlml rmll rnbr rrle rrrr rrum rrun rubb rube rubu ruel ruen ruer rule rull rumb rume ruml rumm rune runn rure ruru ruun ubbe uber uble uele uell uleb ulee ulen ulle ullr ulme ulmu ulne ulul ulum umb- umbe umer unbe uneb unee unen uner unle unmr unne unum urbe ure- urle urne urre urum urun urur uuen uulu uuuu