bbbb bbwr bnor bnrr bnwt bobb bobo bobu bobw bonn bono bont bonu boob boon boor boot boow bor- born boro borr bort boru borw botb botn boto bott botw boun bour bout bouw bown bowr bowt brno brob bron broo bror brot brou brow brrr brun brut btob btor btrt bttb btwn btwo bubb bubo bubu bunb bunn buno bunt bunu buon bur- burb burn buro burr burt buru but- buto butt nbbo nnnn nnot nntn nobo nobu non- nonn nono nont nonu nonw noo- noob noon nooo noor noot nor- norb norn noro norr nort norw not- noto nott notw noun nour nout nown nowt nron ntnu ntru ntto nttr ntwt nunn nuno nunt nuon nurn nurr nurt nuru nutt nutu nwbn nwbw obbo obon obor obot obro onno onon onor ont- onto onur onut oont oooo oort ootb ootw orbb orbo orbu orno oro- oron oror orot orro orto orub orwo oto- oton otoo otor otow otro otto ottu otur otwo oun- our- ourn ouro ourt out- outb outo ouu- owow owt- owtt owur rbbb rbbr rnbr rnnt rnot rnut rob- robb robo robt robu rono ront ronw roob roon roor root roro rort roru rotn roto rotr rott roub roun rout rowb rown rowr rowt roww rrrr rrun rubb rubu runn runo runt ruro ruru ruto rutt rutu ruun tbrb tnut tobo tobt tobu tonb tonn tono tonu toon toor toot torn toro torr tort toru toto totr tott toun tour tout town trno tron troo trot trou trow trtr trub trun trut truu ttbb tton tttt tubb tubo tubr tubu tunb tunn tuno tunu tuor turb turn turo turr turt turu tuto tutt tutu tuuo twbt twnt two- twob twon twoo twot twrn ubbo ubon unno unon unro untb unto unut uor- uro- uroo urun urur urut utor utto uttu utwo uuno uuuu wbbb wbbn wbbo wbbr wbbt wbbw wbnb wbnr wbnw wbob wbon wbor wbow wbrb wbrn wbrr wbrt wbru wbrw wbtn wbto wbtr wbtt wbtu wbtw wbut wbuw wbwb wbwn wbwo wbwt wnbb wnbn wnbr wnbt wnbu wnbw wnnr wnnw wnob wnoo wnor wnow wnrn wnrr wnrt wnrw wntn wnto wntr wntt wntw wnuw wnwn wnwr wnwt wnww wobb wobn wobo wobt wonb wonn wont wonu wonw woob woon woot woow worb worn woro worr wort worw wotb wotr wott wotw woub wour wout wouw wowb wown wowo wowt woww wrbb wrbn wrbo wrbt wrbu wrbw wrnb wrnn wrno wrnr wrnt wrnw wrob wron wroo wrot wrow wrrb wrrn wrro wrrw wrtb wrto wrtr wrtu wrtw wrub wrwb wrwn wrwr wtbb wtbn wtbo wtbr wtbu wtnn wtnr wtnt wtnw wtob wton wtor wtot wtou wtow wtrb wtrn wtro wtrt wtru wtrw wttb wttn wtto wttr wttt wttu wttw wtwb wtwo wtwr wtwt wtww wubb wubr wubt wubu wuno wunr wunt wunw wuot wur- wurb wurn wurt wutb wutr wutu wuub wuuu wwbb wwbn wwbr wwbt wwbu wwnb wwnn wwno wwnr wwnt wwnw wwon wwor wwot wwow wwrb wwrr wwru wwrw wwtn wwtr wwtw wwwn wwwr wwww