-ene bbbb bbdd bbeb bd-r bebb bebe bede bedu beeb beed beek been beer beke bend bene benk benn benu berd bere berk bern berr beru beuk beur bner bnrr breb bred bree brek bren brer brkb brrr brud brue brun bubb bube bubu budb budd bude budu buen buer bueu 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 deek deen deer dek- deke dene denk denn denu der- derb dere derk dern derr deue deuk deur dner dnuk dred dree drek dren drub drue druk druu dub- dubb dube dubu dudd dude dudu duer duke duku dune dunk dunn dure durk durn duru duur ebbr ebed eben eber ebru ebur edde ede- eden eder edrn edru edun edur eede eedu eeee eeke eend ekeb eked ekek eken eker ekne ekur enb- enbn enbr end- ende endu ened enee ener enke enkr enne ennu enue enur erbb erbe erde ereb ered eren erer erke erne erre erub erur eude euer eur- eure kbbb kbbd kbbe kbbk kbbr kbbu kbdb kbde kbdn kbdr kbeb kbed kbee kbek kben kber kbkb kbkk kbkr kbnd kbnn kbnr kbnu kbrb kbrd kbre kbrk kbrn kbru kbub kbud kbue kbuk kbun kbur kbuu kdbb kdbn kdbr kddb kddd kddk kddr kdeb kden kdkb kdkd kdkk kdkn kdkr kdnd kdne kdnk kdnn kdnr kdrb kdub kdun kdur kebb kebe kebn kebr kebu kedb kedd kede kedr keed keek keen keer kekb keke keku ken- kend kene kenk kenn kenr kenu ker- kerb kere kerk kern kerr keru keun keur kkbb kkbd kkbe kkbn kkbr kkdd kked kken kkkk kknb kknd kkne kknn kknu kkrb kkre kkrk kkrn kkrr kkuu knbb knbe knbn knbr knbu kndb kndd knde kndk kndn kndr kndu kneb kned knee knek knen kneu knkk knnb knnd knnk knnr knrb knrk knub knud knue knuk knur krbb krbd krbe krbk krbr krdd krde krdr krdu kreb kred kree krek kren kreu krkd krke krkk krkn krkr krku krnb krnd krne krnk krnn krnu krrb krre krrk krrn krrr krue kruk krun krur kubb kubd kube kubr kubu kudd kude kudu kued kuek kuen kueu kuke kukk kukn kuku kund kune kunk kunr kunu kurb kurd kure kurk kurr kuru kuub kuuk kuur kuuu nber nddb ndde nder ndre nebb nebe nebn nebr nebu nedd nede nedu neeb need neen neer neke neku nend nene nenu nerd nere nerk nerr neru neue neuk neun neur neuu nndb nnnn nren nrrd nube nubk nudd nude nuee nuer nuke nuku nune nunk nunn nurd nure nurn nurr nuru nuuk rbbb rbbr rder rebb rebe rebk rebu redd rede redr redu reeb reed reek reen reke rend rene renk renn renu rerd rere reru reue reuk reuu rnbr rred rrrr rrun rubb rube rubu rudd rude rued ruen ruer ruke rukk rukn ruku rund rune runk runn rurd rure ruru ruud ruun ubbe ubek uber ubud uden uder uduk udun uend ukek ukeu ukur unbd unbe unde uneb uned unee unen uner unke unkn unne urbe urde urdu ure- ured urke urne urre uruk urun urur uuen uuuu