-ous bbbb bbbs bbdd bbdo bbwr bbws bd-r bdos bdsd bobb bobo bobs bobu bobw bodb bodo bods bodu boob bood boor boos boow bor- bord boro borr bors boru borw boso boss bosu boud bour bous bouw bowd bowr bows brdo brds brob brod broo bror bros brou brow brrr brrs brsb brsr brud brus bsbd bsdw bsod bsos bsrd bssd bubb bubo bubs bubu budb budd budo buds budu bur- burb burd buro burr burs buru buss busu buus d-bo dbos dbrs dbss dbus dddd ddss ddub dobb dobs dobu dod- dodd dodo dods doob dood door doos dord doro dorr dors doru doso doss doub doud dour dous douw dowb dowd dowr dows drob drod drou drow drrs drub drus druu dsdr dsos dsrr dub- dubb dubs dubu dudd dudo duds dudu duo- duos duro duru duur dwbr dwdd dwdu dwor dwrd dwrw dwsr dwww obbo obor obos obro obsd obsr obss obus odbo oddd odds odoo odor odos odou odso odur odus oooo ooos oord oous orbb orbo orbs orbu ordo ords ordu oro- oror oros orro orrs orso orsu orub orus orwo osoo osor osos osow osrd osro ossb ossd osso ossu oubs ouds our- ouro ours ousd ouu- owow owur rbbb rbbr rbbs rbds rbsd rbss rdos rdso rob- robb robo robs robu rodd rodo rods rodw roob rood roor roos roro roru roso ross roub roud rous rowb rowd rowr rows roww rrrr rsdd rsds rsos rubb rubs rubu rudd rudo ruds rurd ruro rurs ruru ruso russ rusu ruud s-os sbbs sbds sbor sbsd sbus sbwr sdds sdrs sdss sdsu sobo sobr sobs sobu sodd sodo sods sodu sood soor soos sorb sord soro sorr sors soru soso soss soud sour sous sowd sowr sows sros srsd srub ssbr ssdd ssrs sssb ssss ssws sub- subb subd subo subs sudd sudo suds suor suos sur- surd suro surr surs suru sus- susd suso suss susu suus suwu swbd swbs swbw swob swod swoo swor swow swsd swss ubbo ubod ubos ubud udds udoo udos udsd uor- urbs urds urdu uro- uroo urso urss ursu urur urus usbr usbs usdo usds usos ussb ussr usss ussu usus uuuu wbbb wbbd wbbo wbbr wbbs wbbw wbdr wbob wbor wbos wbow wbrb wbrd wbrr wbrs wbru wbrw wbsb wbsd wbsr wbss wbsu wbsw wbud wbus wbuw wbwb wbwo wdbd wdbo wdbr wdbs wddd wddo wddw wdod wdor wdos wdow wdrb wdrr wdru wdsd wdso wdsr wdsu wdub wdur wdwd wdwr wdws wobb wobo wodb wodd wods woob wood woos woow worb word woro worr wors worw woso woss wosu wosw woub woud wour wous wouw wowb wowo wows woww wrbb wrbo wrbs wrbu wrbw wrdb wrdd wrdo wrdr wrdu wrdw wrob wrod wroo wros wrow wrrb wrrd wrro wrrs wrrw wrsb wrsd wrso wrsr wrss wrsw wrub wrus wrwb wrwd wrwr wsbb wsbr wsbs wsbu wsbw wsdr wsds wsob wsoo wsor wsos wsou wsrb wsro wsrs wsru wsrw wssd wssr wsss wssu wssw wsur wsus wsuw wswb wswd wswr wsws wsww wubb wubr wubu wudd wudr wudu wur- wurb wurd wusb wuso wusr wuss wusu wusw wuub wuuu wwbb wwbd wwbr wwbu wwdb wwdr wwds wwdw wwod wwor wwos wwow wwrb wwrd wwrr wwru wwrw wwsb wwsd wwsr wwss wwsu wwus wwwr wwws wwww