bbbb bbdd bblb bd-r bdii bdmi bdrm bibb bibi bibl bidi bidr bidu bild bili bill bilt bilu birb bird biri birl birr birt biru bitd bitt bitu blbt bldr blim blir blit blub blud blum blur blut bmdb bmir bmmi brdm brdt brid bril brim brit brrm brrr brud brum brut btdt btrt bttb bubb bubi bubu budb budd budi budl budu buid buir buit buiu bulb buld buli bull bult bulu bum- bumb bur- burb burd buri burl burm burr burt buru but- buti butt dbit dbtt dddd ddub dibb didi didu diii dili dill dimi dimm dimu dird dirl dirr dirt diti ditt dlbd dlib dlii dlil dlit dmdt dmrb drib dril drit drub drui drum drut druu dtrl dub- dubb dubu dudd dudu duid duil duir duit duli dull dult dulu dumb dumi dumm duri durt duru duul duur duut ibbm ibid ibim ibml ibrd ibri ibtb ibtl idbm iddm idid idil idir idli idub iiii iiit iitm iitr iitt iium ilbm ilir ilit ill- illd illi illt ilmr ilrm ilud ilum ilut imbi imdb imdi imdt imid imir imit imli immi immt imri imrr irbm iri- irid iril irlb irri irti irul itil itim itll itri itum itur iuiu lblr lbrt lddm libr libu lidb lidl liii liir lilb lili lill lilt lilu limb limi liml limm limu lird liri lirl lirr lirt liru litb litd liti litl litr litt litu liut lldb llll llud lmii lmmr lrdd lrmt lrrr ltbl ltib lttr ludd ludi luit luli lull lulu lumb lumi lurd luri lurt luti mbdb mbim mddl mddm mdii mdil mdli mdud mid- midi midl miii miit mild mili mill milr milt milu mim- mimd mimi mird miri mirl mirr mirt miru mit- mitb miti mitm mitt mitu miui mldr mlii mlit mltb mltr mmdb mmdi mmdl mmii mmli mmmd mmmm mrbb mrbm mrdd mrmd mrml mrtm mrtt mrud mtbd mtlb mtld mtrl mtrr mttr mubi mudd mudi mudl mudu muid muil muir muit muld muli mull mulm mult mulu mumm mumu murd muri murl murr murt muru muti mutt mutu muut rbbb rbbr rdbm rib- ribu ridd ridi rill rilu rimi rimm rimu riri riti ritl ritt ritu rldt rlml rmll rmtu rrrr rrum rtdt rtlt rtmi rtml rubb rubi rubu rudd rudi rudl ruid ruit rull rumb rumi ruml rumm rumt rurd ruri ruru ruti rutl rutt rutu ruud tbil tbit tbrb tddb tdil tdmi tdri tibi tibu tidd tiit tiiu tild till tilr tilt timi timm timu tirb tird tiri tirl tirr tiru titi titt titu tium tldr tlli tmbr tmil tmtt tri- trib tril trim trit trmb trmd trmi trml trmu trtr trub trud trut truu ttbb ttim ttml tttt ttul tubb tubr tubu tudi tudu tuil tuim tuit tuiu tuli tull tulu tumb tumi tumu turb turd turi turm turr turt turu tuti tutl tutt tutu tuum ubbi ubid ubii ubir ubit ubli ubud uddi udid udim udir uiml uirr ulim ulli ullr ulmi ulmu ulti ultt ulul ulum umb- umbi umit umri umut urbi urdu urib urim uriu urmi urri urum urur urut utid util utmb utri utti uttu uulu uuri uuuu