bbbb bblb bbwr blno blob blon bloo blou blow blub blur blw- bnor bnrr bobb bobo bobu bobw boll boln bolo bolu bonn bono bonu boob bool boon boor boow bor- born boro borr boru borw boul boun bour bouw bowl bown bowr brno brob brol bron broo bror brou brow brrr brun bubb bubo bubu bulb bull bulu bunb bunn buno bunu buol buon bur- burb burl burn buro burr buru lblr llll llnw lloo lob- lobb lobo loll lolo lono lonr loob lool loon loor lorn loro loul loun lour louu louw lowb lowl lown lowr lowu loww lron lrrr lull lulu lunn luno luwo luwr luwu lwoo lwow nbbo nlow nlrb nnnn nobo nobu noll nolo non- nonn nono nonu nonw noo- noob nool noon nooo noor nor- norb norn noro norr norw noul noun nour nowl nown nrlb nron nrrl nubl null nunn nuno nuon nurl nurn nurr nuru nwbl nwbn nwbw obbo oblu obol obon obor obro olbo ollo olon olor olur onno onon onor onur oolo oooo orbb orbo orbu orlo orlu orno oro- oron oror orro orub orwo oulu oun- our- ourn ouro ouu- owow owul owur rbbb rbbr rnbr rob- robb robo robu roll rolo rono ronw roob rool roon roor roro roru roub roul roun rowb rowl rown rowr roww rrrr rrun rubb rubu rull rulo runn runo ruro ruru ruun ubbo ublo ubon ullo ullr ulno ulo- ulow ulul unno unon unro uor- uro- urol uroo urun urur uulu uuno uuuu wbbb wbbl wbbn wbbo wbbr wbbw wblb wbll wbln wblo wblu wblw wbnb wbnl wbnr wbnw wbob wbol wbon wbor wbow wbrb wbrn wbrr wbru wbrw wbul wbuw wbwb wbwl wbwn wbwo wlbb wlbl wlbn wlbr wlbw wlll wlln wllr wllw wlnl wlno wlob wlol wlon wloo wlor wlou wlrb wlrn wlro wlrr wlrw wlub wlun wlur wluw wlwl wnbb wnbl wnbn wnbr wnbu wnbw wnlo wnlr wnnl wnnr wnnw wnob wnoo wnor wnow wnrn wnrr wnrw wnuw wnwn wnwr wnww wobb wobl wobn wobo wolb woll wolr wolw wonb wonn wonu wonw woob wool woon woow worb worl worn woro worr worw woub woul wour wouw wowb wowl wown wowo woww wrbb wrbl wrbn wrbo wrbu wrbw wrlb wrll wrlr wrlu wrnb wrnl wrnn wrno wrnr wrnw wrob wrol wron wroo wrow wrrb wrrl wrrn wrro wrrw wrub wrul wrwb wrwn wrwr wubb wubl wubr wubu wull wulr wulu wuno wunr wunw wur- wurb wurl wurn wuub wuuu wwbb wwbl wwbn wwbr wwbu wwlb wwll wwln wwlr wwlu wwlw wwnb wwnl wwnn wwno wwnr wwnw wwol wwon wwor wwow wwrb wwrl wwrr wwru wwrw wwwl wwwn wwwr wwww