-ene bbbb bbdd bbeb bbfn bd-r bduf bebb bebe bede bedu beeb beed beef beek been beer befe beff beke bend bene benk benn benu berd bere berk bern berr beru beuk beur bner bnrr breb bred bree bref brek bren brer brfu brkb brrr brud brue brun bubb bube bubu budb budd bude budu buen buer bueu bufe buff bufr buke bukk buku bunb bund bune bunk bunn bunu bur- burb burd bure burk burn burr buru dbrn dddd ddre ddub debe debu dedd dede dedu deeb deed deef deek deen deer defe deff defn dek- deke dene denk denn denu der- derb dere derf derk dern derr deue deuk deur dfer dfrf dner dnuk dred dree dref drek dren drub drue druk druu dub- dubb dube dubu dudd dude dudu duer duff dufu duke duku dune dunk dunn dure durk durn duru duur ebbr ebed eben eber ebru ebur edde ede- eden eder edfu edrn edru edun edur eede eedu eeee eefe eefn eeke eend efbr efen efke ekeb eked ekek eken eker ekne ekur enb- enbn enbr end- ende endu ened enee ener enfb enke enkr enne ennu enue enuf enur erbb erbe erde erdf ereb ered eren erer erke erne erre erub erur eude euer eur- eure f--k fede fedn feeb feed feek feen feer fefe feff feke fend fene fenk fenn ferb ferd fere ferk fern ferr feru feud ffee ffff ffrr ffun fndd fndn fndr fnuf fred free fren frub frue frun fubb fubu fudd fude fuff fufu fuke fukk fuku fund fune funf funk fur- fure furn furr kbbb kbbd kbbe kbbf kbbk kbbr kbbu kbdb kbde kbdf kbdn kbdr kbeb kbed kbee kbef kbek kben kber kbfb kbff kbfk kbfr kbkb kbkf kbkk kbkr kbnd kbnn kbnr kbnu kbrb kbrd kbre kbrf kbrk kbrn kbru kbub kbud kbue kbuf kbuk kbun kbur kbuu kdbb kdbn kdbr kddb kddd kddf kddk kddr kdeb kdef kden kdfn kdfr kdkb kdkd kdkk kdkn kdkr kdnd kdne kdnk kdnn kdnr kdrb kdrf kdub kdun kdur kebb kebe kebn kebr kebu kedb kedd kede kedr keed keef keek keen keer kefb keff kefr kekb keke keku ken- kend kene kenk kenn kenr kenu ker- kerb kere kerf kerk kern kerr keru keun keur kfbk kfbn kfdn kfeb kfed kfer kffb kfff kffk kffn kfkb kfnf kfnk kfnn kfrd kfre kfrn kfrr kfru kfun kkbb kkbd kkbe kkbn kkbr kkdd kked kken kkfn kkfr kkkk kknb kknd kkne kknn kknu kkrb kkre kkrf kkrk kkrn kkrr kkuu knbb knbe knbn knbr knbu kndb kndd knde kndf kndk kndn kndr kndu kneb kned knee knef knek knen kneu knfr knkk knnb knnd knnk knnr knrb knrk knub knud knue knuk knur krbb krbd krbe krbk krbr krdd krde krdr krdu kreb kred kree kref krek kren kreu krfd krfe krff krfn krkd krke krkk krkn krkr krku krnb krnd krne krnk krnn krnu krrb krre krrf krrk krrn krrr krue kruf kruk krun krur kubb kubd kube kubr kubu kudd kude kudu kued kuek kuen kueu kuff kufn kufr kuke kukk kukn kuku kund kune kunk kunr kunu kurb kurd kure kurk kurr kuru kuub kuuk kuur kuuu nber nbuf nddb ndde nder ndre ndrf nebb nebe nebn nebr nebu nedd nede nedu neeb need neef neen neer nefd nefe neff neke neku nend nene nenu nerd nere nerf nerk nerr neru neue neuf neuk neun neur neuu nfer nfff nkrf nndb nnnn nren nrrd nube nubk nudd nude nuee nuer nuff nuke nuku nune nunk nunn nurd nure nurn nurr nuru nuuk rbbb rbbr rder rebb rebe rebk rebu redd rede redr redu reeb reed reef reek reen refd refe reff refn refr refu reke rend rene renk renn renu rerd rere reru reue reuf reuk reuu rfef rkkf rnbr rndf rred rrrr rrun rubb rube rubu rudd rude rued ruen ruer rufe ruff ruke rukk rukn ruku rund rune runf runk runn rurd rure ruru ruud ruun ubbe ubek uber ubud uden uder uduk udun uend ufer uffe ufuk ukek ukeu ukur unbd unbe unde uneb uned unee unef unen uner unfd unke unkn unne unrf urbe urde urdu ure- ured urfe urff urke urne urre uruk urun urur uuen uuuu