-ous bbbb bbbs bbrc bcbc bcbs bccc bccs bcor bcos bcrs bcru bcsc bcss bctc bcts bcuc bobb bobo bobs bobu bock boco bocs bocu boko boks boku boob booc book boor boos boot bor- bork boro borr bors bort boru bosc bosk boso boss bost bosu botb boto bots bott bouk bour bous bout brcb brkb brob broc brok broo bror bros brot brou brrr brrs brsb brsr brst brtc bruc brus brut bscs bskt bsos bssc bsts btcc btcs btob btor btrc btrt btss bttb btus bubb bubo bubs bubu bucc buck buco bucs bucu bukk buko buku bur- burb burk buro burr burs burt buru busc busk buss bust busu but- buto buts butt buus c-bo cbbc cbbs cbcc cbcr cbcs cbct cbcu cbko cbkr cbot cbrt cbsc cbtc cbus ccbc cccb cccc cccs cccu ccob ccoc ccrc ccrs ccrt ccss ccst cctb cctc cctt ccuc ccus ccut ckbc ckck ckco ckcs ckob ckoc ckoo ckor ckos ckot ckrc cksb ckso ckst cktb ckts cobb cobo cobs cobu cock coco coct cocu cok- coko coob cook coos coot cor- corb corc cork coro corr cors cort cosc coso coss cost cotb cotc coto cots cott cotu coub couk cour cous cout crbc crbu crcc crcr crkc crob croc crok croo cror crot crrt crss crst crtc crts crub cruk crus crut cscb cscc csco cscr cscs csks csob csor csos csot csrc csrs cssr cstc csto cstr csts csur csus ctbs ctor ctos ctot ctrc ctrs ctsc ctss ctsu ctts cub- cubb cubs cucc cuck cuk- curb curo curr curs curt cusb cusk cuso cuss cust cusu cut- cutc cuto cuts cutt k-os kbbb kbbc kbbk kbbo kbbr kbbs kbbt kbbu kbcb kbck kbco kbcr kbcs kbct kbcu kbkb kbkk kbko kbkr kbob kboc kbok kboo kbos kbot kbrb kbrc kbrk kbro kbrt kbru kbsb kbsk kbso kbsr kbss kbst kbsu kbtb kbtc kbtk kbto kbtr kbts kbtt kbub kbuc kbuk kbur kbus kbut kbuu kcbc kcbk kcbr kcbs kcbu kccb kccc kcck kccr kcct kccu kckc kckk kcko kckr kcob kcor kcos kcot kcou kcrc kcro kcrr kcrs kcrt kcru kcsb kcsc kcsr kcss kcst kcsu kctb kctc kcto kctu kcub kcuk kkbb kkbo kkbr kkbs kkbt kkcb kkck kkco kkcr kkcs kkct kkkk kkob kkoo kkor kkot kkrb kkrc kkrk kkro kkrr kkrs kkrt kksr kkss kkst kksu kktc kktk kkts kktu kkus kkut kkuu kobb kobc kobk kobo kobr kobs kobu kocb kock kocs koct kokb kokc kokk koko kokr koks koku koob kooc kook kooo koor koos koot koou korb korc kork koro korr kors kort koru kos- kosb kosc koso kosr koss kost kosu kotb kotc kotk koto kotr kots kott kotu koub kour kous kout kouu krbb krbk krbr krbt krcb krcc krco krcs krcu krkc krkk krko krkr krks krku krob kroc krok kroo kror kros krrb krrc krrk krro krrr krrs krrt krsc krsk krsr krss krst krsu krtc krtk krto krtr krts kruc kruk krur ksbc ksbr ksbs kscb ksck ksco kscr kscs kscu kskb kskk ksko kskr ksks ksku ksob ksoc ksok ksoo ksor ksos ksou ksrb ksro ksrr ksrs ksrt ksso kssr ksss ksst kssu kstb kstc kstk ksto kstr ksts kstt kstu ksub ksut ksuu ktbb ktbc ktbr ktbt ktbu ktcc ktck ktco ktcr ktcs ktkb ktkc ktkk ktko ktkr ktks ktkt ktku ktob ktoc ktok ktoo ktor ktot ktrb ktrc ktrk ktro ktrr ktrs ktrt ktru ktsc ktso ktsr ktst ktsu kttc kttk ktto kttr ktts kttt kttu ktub ktuc kubb kubc kubo kubr kubs kubu kucb kucc kuco kucr kukk kuks kuku kuok kuoo kuos kurb kurk kuro kurr kurs kurt kuru kusb kusc kuso kust kusu kuto kutr kuts kutt kutu kuub kuuk kuur kuuu obbo obkb obok obor obos obot obro obsr obss obst obts obus ocbc occc occt ocks ocos ocro ocrr ocrs oct- octo octs ocur okcu okko okok okor okot okro okso okto okur okus oocr ooku oooo ooos oort oost ootb oots oous orbb orbo orbs orbu orco orcs orko oro- orok oror oros orot orro orrs orsk orso orsu ortc orto orts orub orus oscc osco osku osoo osor osos osro ossb osso ossu ostc ostr osts otbs oto- otok otoo otor otos otro otrs otso otsu otto otts ottu otur otus oubs oucc our- ouro ours ourt oust out- outb outo outs ouu- rbbb rbbr rbbs rbss rbst rcbc rcbo rccb rccc rccs rcos rcsc rcss rctc rcts rkos rkss rkts rob- robb robo robs robt robu rocc rock roco rocs rokk roko rokr roks roku roob rook roor roos root rorc rork roro rort roru rosc roso ross rost rotc rotk roto rotr rots rott roub rouk rous rout rrrr rscc rscs rsos rsts rstu rtcc rtss rtts rubb rubs rubu ruck ruct rukk ruku ruok rurc ruro rurs ruru rusk ruso russ rust rusu ruto ruts rutt rutu s-os sbbs sbcc sbcs sbct sbor sbot sbrk sbst sbtc sbtk sbus sccc sccs scct sck- scob scok scoo scor scot scr- scrc scrs scsc scso scsr scst scsu sctc scto sctr scts scub scur scut skor skot skrt skss skur skut sobo sobr sobs sobt sobu sock soco socr socs sokk soko soku sook soor soos soot sorb soro sorr sors sort soru soso soss sost sotc sotk soto sots sotu souk sour sous sout srbc srcc srct sros srtr srub ssbr sscc sscs ssoc ssot ssrc ssrs sssb sssc ssss sstb sstc ssts stbc stbs stcc stcs stcu stks stob stok stoo stor stos stot stou strc strk stro strs stru stss sttc sttr stub stuc stuk stur stus stut sub- subb subo subs suc- succ suck sucr sucs suks suku suor suos sur- surc suro surr surs surt suru sus- susk suso suss sust susu suto sutu suus tbbs tbcb tbcc tbrb tbst tcbs tccc tccu tcos tctc tcts tkos tkts tobo tobs tobt tobu tock toco toko toku took toor toos toot torc tork toro torr tors tort toru tosb tosc