bbbb bbdd bblb bd-r bdii bdmi bdrm bibb bibi bibl bidi bidr bidu bild bili bill bilu birb bird biri birl birr biru bldr blim blir blub blud blum blur bmdb bmir bmmi brdm brid bril brim brrm brrr brud brum bubb bubi bubu budb budd budi budl budu buid buir buiu bulb buld buli bull bulu bum- bumb bur- burb burd buri burl burm burr buru dddd ddub dibb didi didu diii dili dill dimi dimm dimu dird dirl dirr dlbd dlib dlii dlil dmrb drib dril drub drui drum druu dub- dubb dubu dudd dudu duid duil duir duli dull dulu dumb dumi dumm duri duru duul duur ibbm ibid ibim ibml ibrd ibri idbm iddm idid idil idir idli idub iiii iium ilbm ilir ill- illd illi ilmr ilrm ilud ilum imbi imdb imdi imid imir imli immi imri imrr irbm iri- irid iril irlb irri irul iuiu lblr lddm libr libu lidb lidl liii liir lilb lili lill lilu limb limi liml limm limu lird liri lirl lirr liru lldb llll llud lmii lmmr lrdd lrrr ludd ludi luli lull lulu lumb lumi lurd luri mbdb mbim mddl mddm mdii mdil mdli mdud mid- midi midl miii mild mili mill milr milu mim- mimd mimi mird miri mirl mirr miru miui mldr mlii mmdb mmdi mmdl mmii mmli mmmd mmmm mrbb mrbm mrdd mrmd mrml mrud mubi mudd mudi mudl mudu muid muil muir muld muli mull mulm mulu mumm mumu murd muri murl murr muru rbbb rbbr rdbm rib- ribu ridd ridi rill rilu rimi rimm rimu riri rlml rmll rrrr rrum rubb rubi rubu rudd rudi rudl ruid rull rumb rumi ruml rumm rurd ruri ruru ruud ubbi ubid ubii ubir ubli ubud uddi udid udim udir uiml uirr ulim ulli ullr ulmi ulmu ulul ulum umb- umbi umri urbi urdu urib urim uriu urmi urri urum urur uulu uuri uuuu