-ene bbbb bbeb bbet bblb bebb bebe beeb beel been beet bele bell belt belu bene benn bent benu bete bett betu blbt bleb blee blet bleu blub blue blut bnet bten bttb bubb bube bubu buel buen bueu bulb bule bull bult bulu bunb bune bunn bunt bunu but- bute butt ebel eben ebul eeee eele eent eete eetu el-b elbe elbu elee elen elet elle ellu elne elte elue elul enb- enbn enee enel enne ennu ent- ente enue enut etee etel eten etne ette ettn ettu etun eule le-u lebu leel leen leet lele lell lelu lene lenn lent lete lett leun llet lleu llll ltbl ltee ltnt lube lule lull lulu lune lunn lunt lute nebb nebe nebn nebu neeb neel neen neet nele nell nelt nene nent nenu net- netb nete nett neue neun neut neuu nnnn nntn nteu ntnu nube nubl nuee nuel nule null nune nunn nunt nute nutt nutu tebu teel teen teet tel- tele tell teln telt telu tenb tene tenn tent tenu tete tett tetu teut tlen tneb tnut ttbb tten tttt ttul tubb tube tubu tuel tuen tuet tule tull tulu tunb tune tunn tunu tute tutl tutt tutu ubbe ubet uble uele uell uleb ulee ulen ulle ulne ultt ulul unbe uneb unee unen unle unne untb unte unut utel utne uttu uuen uulu uuuu