-ene bbbb bbeb bbet bbrc bcbc bccc bcec bcer bcet bcnu bcru bctc bcuc bebb bebe becu beeb been beer beet bene benn bent benu berc bere bern berr bert beru betc bete bett betu beur bner bnet bnrr brcb brce breb brec bree bren brer bret brrr brtc bruc brue brun brut btcc btec bten btrc btrt bttb bubb bube bubu bucc buce bucu buen buer bueu bunb bune bunn bunt bunu bur- burb bure burn burr burt buru but- bute butt cbbc cbcc cbce cbcn cbcr cbct cbcu cbec cbee cber cbet cbre cbrn cbrt cbtc ccbc ccbn cccb cccc cccu ccee ccnb ccnc ccne ccnr ccnu ccrc ccre ccrt cctb cctc cctt ccuc ccut cebu cec- cece cect ceeb ceec cen- cene cent cer- cerc cere cern cert cet- cete cnbc cnet cnrc cnrr cnrt cntc cntr cnut crbc crbu crcc crce crcr cre- creb crec cree cren cret creu crne crrt crtc crub crue crun crut ctec cten ctne ctrc ctrn cttn cub- cubb cube cucc cuce cucn cuer cune cunt curb cure curn curr curt cut- cutc cute cutt ebbc ebbr ebcc eben eber ebru ebur ecbc ecbe eccb eccc ecce ecct ecne ecrc ecrr ecru ect- ectc eeee eent eerc eetc eete eetu enb- enbn enbr ence enee ener ennc enne ennu ent- ente entr enue enur enut erbb erbe ercc erce ereb erec eren erer eret erne errc erre ertu erub eruc erur etbc etbr etcc etec etee eten eter etne etnr etre ette ettn ettu etun eubc euer eur- eurc eure eurt nbbc nbcc nber ncbc nccc nccn nccr ncct nccu ncec ncee ncen ncer ncnc ncrc ncre nctc ncte nctr ncue nebb nebe nebn nebr nebu necc nece necr nect neeb neen neer neet nene nent nenu nerc nere nerr nert neru net- netb nete nett neuc neue neun neur neut neuu nnnn nntn nren nrrc ntbc ntcc nter nteu ntnu ntrc ntru nttr ntuc nubc nube nuce nucu nuee nuer nunc nune nunn nunt nurc nure nurn nurr nurt nuru nute nutt nutu rbbb rbbr rcbc rccb rccc rcet rcnr rctc rebb rebe rebu recc rece recr rect recu reeb reen reet rene renn rent renu rere rert reru rete retr rett reue reut reuu rnbr rnnt rnut rrrr rrun rtcc rtce rtee rubb rube rubu ruce ruct ruen ruer ruet runc rune runn runt rurc rure ruru rute rutt rutu ruun tbcb tbcc tbce tbrb tccc tccu tcnn tctc tebu tecr tect teec teen teer teet tenb tenc tene tenn tent tenu ter- terc tere tern terr teru tete tetr tett tetu teut tnbc tncc tneb tnut trcc tre- trec tree tren tret treu trtc trte trtr trub truc true trun trut truu ttbb ttcn tten tter tttt tubb tube tubr tubu tucc tuen tuer tuet tunb tunc tune tunn tunu turb turc ture turn turr turt turu tute tutt tutu ubbe uber ubet ucbc ucrc ucut unbe uncc unce unct uneb unec unee unen uner unne untb unte unut urbe ure- uret urne urre urte urun urur urut utec uter utne uttu uuen uuuu