-ous bbbb bbbs bbin bbwr bbws bibb bibi bibo bibs biin biis bin- bini binn bino bins binu bio- bioi bion bios biou birb biri birn biro birr birs biru bis- biso biss bisu biw- bnib bnin bnor bnrr bnss bobb bobi bobo bobs bobu bobw boi- boii boin bois boiu boni bonn bono bons bonu boob boon boor boos boow bor- bori born boro borr bors boru borw bosi bosn boso boss bosu boun bour bous bouw bowi bown bowr bows brin brio bris brno brns brob bron broo bror bros brou brow brrr brrs brsb brsr brun brus bsin bsns bson bsos bubb bubi bubo bubs bubu buin buir buis buiu bunb buni bunn buno buns bunu buon bur- burb buri burn buro burr burs buru busi buss busu buus bwin i-no ibis ibns ibon ibos ibri ibro ibsn ibss ibus iiii iiio iiis iino iioi iioo iios iirs iisi iisr iisu iiwi inbo inis inni inno innr inns innu ino- inoi inon inor inos inou inow inri inro inrs inso inss insu inui inun inus inw- inwi iobi ioii ioio ioni ionn iono ions iooi iooo ioos iori iors ioso iosu ioun ious iown iri- irin irio iris irob iron irri irrs irun irus isbn isin isis isno iso- ison isor isos isri issi isso issr isss issu isus iswn iuiu iuno iuss iwin iwis iwiw iwno iwon n-ii nbbo nibi nibo nibs niir niiu nini nino nins nion nioo nios niou niro nirs niru nisi niso niss nisu niur nnnn nnos nnss nobi nobo nobs nobu noib noin noio noir nois non- noni nonn nono nons nonu nonw noo- noob noon nooo noor noos nor- norb nori norn noro norr nors norw nos- noss nosu noun nour nous nowi nown nows nron nsbo nsin nsis nsnr nsos nsou nssb nsso nssr nsss nsub nswr nubi nubs nuin nunn nuno nuns nuon nuri nurn nurr nurs nuru nusi nuss nusu nusw nwbn nwbw nwss obbo obin obis oboi obon obor obos obri obro obsn obsr obss obus oiii oins oion oios oisu onir onis onni onno onon onor onos onso onur onus oobi oons oooo ooos oosi oous orbb orbi orbo orbs orbu ori- orin orio oris orni orno orns oro- oron oror oros orri orro orrs orsi orso orsu orub orus orwo osii osin osis osno osnr osoi osoo osor osos osow osro ossb ossi osso ossu osun oubs ouii ouin ouir ouis oun- our- ourn ouro ours ouu- owir owni owns owow owur rbbb rbbr rbbs rbis rbss rib- ribo ribs ribu riin riis rinn rino rion rios riou riri rirs risi riso riss risu rius riwo rnbr rnin rob- robb robi robo robs robu roin roio roir rois roiu roni rono rons ronw roob rooi roon roor roos rori roro roru rosi roso ross roub roun rous rowb rowi rown rowr rows roww rrrr rrun rsbi rsis rsnn rsno rsnr rsos rubb rubi rubs rubu ruin ruis runi runn runo runs ruri ruro rurs ruru rusi ruso russ rusu ruun ruwi s-ib s-ii s-os sbbs sbor sbsi sbus sbwr sibi sibo sibs sibu sini sinn sino sins sinu sion sior sios siou siri siro sirr sirs siru sisi siss sisu siui sius siwi snib snir sniw snns snob snoo snor snos snow snrs snub snur snus sobo sobr sobs sobu soin soir sois son- soni sono sons sonu soon soor soos sorb sori sorn soro sorr sors soru sosi soso soss soun sour sous sowi sown sowr sows srib sris srni srnn srno sros srub ssbn ssbr ssin ssis ssns ssri ssrs sssb sssi ssss ssws sub- subb subi subo subs suin suio suir suis sun- sunb suni sunn suno suns sunu suor suos sur- suri surn suro surr surs suru sus- susi suso suss susu suus suwu swbs swbw swir swis swob swon swoo swor swow swss ubbi ubbo ubii ubir ubis ubon ubos uirr uni- unii unin unio unir unis unni unno unns unon unos unro unrs uns- unso unus uor- urbi urbs urib urin uris uriu urni urns uro- uroo urri ursi urso urss ursu urun urur urus usbr usbs usin usis usno usnr usnu usoi usos ussb ussr usss ussu usui usun usus uuni uuno uuri uusi uuuu uwin wbbb wbbi wbbn wbbo wbbr wbbs wbbw wbib wbin wbio wbis wbiw wbnb wbnr wbns wbnw wbob wboi wbon wbor wbos wbow wbrb wbri wbrn wbrr wbrs wbru wbrw wbsb wbsr wbss wbsu wbsw wbui wbus wbuw wbwb wbwi wbwn wbwo wibb wibi wibn wibr wibs wibw wiii wiin wiis wiiu winb wini winn wino winr wins winu winw wiob wioi wion wioo wios wiou wirb wiri wirn wiro wirr wiru wisn wiso wisr wiss wisu wisw wius wiuw wiwi wiwn wiwu wnbb wnbi wnbn wnbr wnbs wnbu wnbw wnib wnin wnio wnir wnis wniu wniw wnnr wnns wnnw wnob wnoi wnoo wnor wnos wnow wnri wnrn wnrr wnrs wnrw wnsb wnsn wnsr wnss wnsw wnus wnuw wnwi wnwn wnwr wnws wnww wobb wobn wobo woio woir wois wonb wonn wons wonu wonw woob woon woos woow worb wori worn woro worr wors worw wosn woso woss wosu wosw woub wour wous wouw wowb wowi wown wowo wows woww wrbb wrbi wrbn wrbo wrbs wrbu wrbw wrin wriu wrnb wrni wrnn wrno wrnr wrns wrnw wrob wroi wron wroo wros wrow wrrb wrrn wrro wrrs wrrw wrsb wrsi wrsn wrso wrsr wrss wrsw wrub wrus wrwb wrwn wrwr wsbb wsbi wsbr wsbs wsbu wsbw wsib wsir wsis wsiu wsni wsnn wsno wsnr wsnw wsob wson wsoo wsor wsos wsou wsrb wsri wsrn wsro wsrs wsru wsrw wssi wssr wsss wssu wssw wsui wsun wsur wsus wsuw wswb wswi wswn wswr wsws wsww wubb wubi wubr wubu wuin wuis wuni wuno wunr wunw wur- wurb wurn wusb wusi wusn wuso wusr wuss wusu wusw wuub wuuu wwbb wwbn wwbr wwbu wwib wwii wwin wwio wwis wwnb wwnn wwno wwnr wwns wwnw wwon wwor wwos wwow wwrb wwrr wwru wwrw wwsb wwsi wwsn