bbbb bbdd bbeb bbet bd-r bdrm bebb bebe bede bedu beeb beed beem beer beet beme bemu berd bere berm berr bert beru bete bett betu beur bmdb brdm brdt breb bred bree brem brer bret brrm brrr brud brue brum brut btdt btrt bttb bubb bube bubu budb budd bude budu buem buer bueu bum- bumb bur- burb burd bure burm burr burt buru but- bute butt dbtt dddd ddre ddub debe debt debu dedd dede dedu deeb deed deem deer deet dem- demb demd deme demu der- derb dere derm derr dete detr deue deum deur deut dmdt dmrb dred dree drem dret drub drue drum drut druu dted dub- dubb dube dubu dudd dude dudu duer duet dumb dume dumm dure durt duru dute duur duut ebbr ebed eber ebru ebur edde eddm ede- edem eder edme edrm edru edur eede eedu eeee eete eetu embd embe embr emdt emer emet emeu emme emmu emre emte erbb erbe erde ereb ered erem erer eret erme erre ertu erub erum erur etbr etee etem eter etre etrm ette ettu eude eudm euer eur- eure eurt mbdb mbed mddm mdme mdud mebe medb medd mede medu meed meem meer meet meme memr memu mer- merb merd mere merm mert meru met- mete mett metu meum mmdb mmmd mmmm mrbb mrbm mrdd mreb mred mree mrmd mrtm mrtt mrud mtbd mtre mtrr mttr mube mudd mude mudu mued muee muet mume mumm mumu murd mure murr murt muru mute mutt mutu muut rbbb rbbr rdbm rder rebb rebe rebu redd rede redr redu reeb reed reem reet reme rerd rere rert reru retd rete retr rett reue reut reuu rmtu rred rrrr rrum rtdt rtee rubb rube rubu rudd rude rued ruer ruet rumb rume rumm rumt rurd rure ruru rute rutt rutu ruud tbrb tddb tebu tedd tede tedm teed teem teer teet teme temu ter- tere term terr teru tete tetr tett tetu teut tmbr tmed tmtt tre- tred tree trem tret treu trmb trmd trmu trte trtr trub trud true trut truu ttbb tter tttt tubb tube tubr tubu tude tudu tuer tuet tumb tume tumu turb turd ture turm turr turt turu tute tutt tutu tuum ubbe uber ubet ubud udem uder udet umb- umbe umde umer umet umut urbe urde urdu ure- ured uret urre urte urum urur urut uter utmb uttu uuuu