-ene bbbb bbdd bbeb bbfn bd-r bduf bebb bebe bede bedu beeb beed beef been beer befe beff bend bene benn benu berd bere bern berr beru beur bner bnrr breb bred bree bref bren brer brfu brrr brud brue brun bubb bube bubu budb budd bude budu buen buer bueu bufe buff bufr bunb bund bune bunn bunu bur- burb burd bure burn burr buru dbrn dddd ddre ddub debe debu dedd dede dedu deeb deed deef deen deer defe deff defn dene denn denu der- derb dere derf dern derr deue deur dfer dfrf dner dred dree dref dren drub drue druu dub- dubb dube dubu dudd dude dudu duer duff dufu dune dunn dure durn duru duur ebbr ebed eben eber ebru ebur edde ede- eden eder edfu edrn edru edun edur eede eedu eeee eefe eefn eend efbr efen enb- enbn enbr end- ende endu ened enee ener enfb enne ennu enue enuf enur erbb erbe erde erdf ereb ered eren erer erne erre erub erur eude euer eur- eure fede fedn feeb feed feen feer fefe feff fend fene fenn ferb ferd fere fern ferr feru feud ffee ffff ffrr ffun fndd fndn fndr fnuf fred free fren frub frue frun fubb fubu fudd fude fuff fufu fund fune funf fur- fure furn furr nber nbuf nddb ndde nder ndre ndrf nebb nebe nebn nebr nebu nedd nede nedu neeb need neef neen neer nefd nefe neff nend nene nenu nerd nere nerf nerr neru neue neuf neun neur neuu nfer nfff nndb nnnn nren nrrd nube nudd nude nuee nuer nuff nune nunn nurd nure nurn nurr nuru rbbb rbbr rder rebb rebe rebu redd rede redr redu reeb reed reef reen refd refe reff refn refr refu rend rene renn renu rerd rere reru reue reuf reuu rfef rnbr rndf rred rrrr rrun rubb rube rubu rudd rude rued ruen ruer rufe ruff rund rune runf runn rurd rure ruru ruud ruun ubbe uber ubud uden uder udun uend ufer uffe unbd unbe unde uneb uned unee unef unen uner unfd unne unrf urbe urde urdu ure- ured urfe urff urne urre urun urur uuen uuuu