-ous bbbb bbbs bbrc bcbc bcbs bccc bccs bcnu bcor bcos bcrs bcru bcsc bcsn bcss bcuc bnoc bnor bnrr bnss bobb bobo bobs bobu bock boco bocs bocu bokn boko boks boku bonc bonk bonn bono bons bonu boob booc book boon boor boos bor- bork born boro borr bors boru bosc bosk bosn boso boss bosu bouk boun bour bous brcb brkb brno brns brob broc brok bron broo bror bros brou brrr brrs brsb brsr bruc brun brus bscs bsns bson bsos bssc bubb bubo bubs bubu bucc buck buco bucs bucu bukk buko buku bunb bunk bunn buno buns bunu buon bur- burb burk burn buro burr burs buru busc busk buss busu buus c-bo cbbc cbbs cbcc cbcn cbcr cbcs cbcu cbkn cbko cbkr cbrn cbsc cbsn cbus ccbc ccbn cccb cccc cccs cccu ccnb ccnc ccnr ccns ccnu ccob ccoc ccrc ccrs ccsn ccss ccuc ccus ckbc ckck ckco ckcs cknb cknc ckns ckob ckoc ckoo ckor ckos ckrc cksb ckso cnbc cnco cnrc cnrr cnss cobb cobo cobs cobu cock coco cocu cok- coko con- conc conk conn cono cons coob cook coon coos cor- corb corc cork corn coro corr cors cosc coso coss coub couk coun cour cous crbc crbu crcc crcr crkc crns crob croc crok cron croo cror crss crub cruk crun crus cscb cscc csco cscr cscs csks csob csor csos csrc csrs cssr csur csus cub- cubb cubs cucc cuck cucn cuk- cuno cuon curb curn curo curr curs cusb cusk cuso cuss cusu k-os kbbb kbbc kbbk kbbo kbbr kbbs kbbu kbcb kbck kbco kbcr kbcs kbcu kbkb kbkk kbko kbkr kbnn kbno kbnr kbnu kbob kboc kbok kbon kboo kbos kbrb kbrc kbrk kbrn kbro kbru kbsb kbsk kbsn kbso kbsr kbss kbsu kbub kbuc kbuk kbun kbur kbus kbuu kcbc kcbk kcbr kcbs kcbu kccb kccc kcck kccr kccu kckc kckk kckn kcko kckr kcnb kcno kcnr kcns kcob kcon kcor kcos kcou kcrc kcrn kcro kcrr kcrs kcru kcsb kcsc kcsn kcsr kcss kcsu kcub kcuk kkbb kkbn kkbo kkbr kkbs kkcb kkck kkcn kkco kkcr kkcs kkkk kknb kknn kkno kkns kknu kkob kkon kkoo kkor kkrb kkrc kkrk kkrn kkro kkrr kkrs kksn kksr kkss kksu kkus kkuu knbb knbc knbn knbr knbu kncb knck kncn knco kncr kncu knkk knnb knnk knnr knns knob knoc knok knon knor knou knrb knrk knro knrs knsb knsc knsk knsn knso knsr knss knsu knub knuk knur knus kobb kobc kobk kobn kobo kobr kobs kobu kocb kock kocn kocs kokb kokc kokk kokn koko kokr koks koku konc konk kono koob kooc kook koon kooo koor koos koou korb korc kork korn koro korr kors koru kos- kosb kosc koso kosr koss kosu koub kour kous kouu krbb krbk krbr krcb krcc krcn krco krcs krcu krkc krkk krkn krko krkr krks krku krnb krnk krnn krno krnu krob kroc krok kroo kror kros krrb krrc krrk krrn krro krrr krrs krsc krsk krsn krsr krss krsu kruc kruk krun krur ksbc ksbn ksbr ksbs kscb ksck kscn ksco kscr kscs kscu kskb kskk kskn ksko kskr ksks ksku ksnb ksnc ksnk ksnn ksnr ksns ksob ksoc ksok kson ksoo ksor ksos ksou ksrb ksrn ksro ksrr ksrs kssn ksso kssr ksss kssu ksub ksun ksuu kubb kubc kubo kubr kubs kubu kucb kucc kuco kucr kukk kukn kuks kuku kunc kunk kuno kunr kuns kunu kuok kuon kuoo kuos kurb kurk kuro kurr kurs kuru kusb kusc kusn kuso kusu kuub kuuk kuur kuuu nbbc nbbo nbcc nbco nbcs ncbc ncbs nccc nccn nccr nccs nccu ncnc ncoc ncor ncos ncrc ncsc ncss ncuk nkok nkor nnnn nnos nnss nobc nobo nobs nobu nock noco nocs noko non- nonn nono nons nonu noo- noob nook noon nooo noor noos nor- norb norc nork norn noro norr nors nos- nosk noss nosu noun nour nous nrcs nroc nron nrrc nrsc nsbo nscc nscs nskk nsnr nsok nsos nsou nsrc nssb nssc nsso nssr nsss nsub nubc nubk nubs nuck nucs nucu nuku nunc nunk nunn nuno nuns nuoc nuon nurc nurn nurr nurs nuru nuss nusu nuuk obbo obkb obok obon obor obos obro obsn obsr obss obus ocbc occc occn ocks ocon ocos ocro ocrr ocrs ocur okcu okko okno okok okon okor okro okso okun okur okus onc- onco onno onon onor onos onsc onso onur onus oocr ooku oons oooo ooos oous orbb orbo orbs orbu orco orcs orko ornc orno orns oro- orok oron oror oros orro orrs orsk orso orsu orub orus oscc osco osku osno osnr osoo osor osos osro ossb osso ossu osun oubs oucc oun- our- ourn ouro ours ouu- rbbb rbbr rbbs rbss rcbc rcbo rccb rccc rccs rcnr rcon rcos rcsc rcss rkos rkss rnbr rnco rncs rob- robb robo robs robu rocc rock roco rocs rokk roko rokr roks roku ronc ronk rono rons roob rook roon roor roos rorc rork roro roru rosc roso ross roub rouk roun rous rrrr rrun rscc rscn rscs rsnn rsno rsnr rsos rubb rubs rubu ruck rukk rukn ruku runc runk runn runo runs ruok rurc ruro rurs ruru rusk ruso russ rusu ruun s-os sbbs sbcc sbcs sbor sbrk sbus sccc sccs sck- scnr scob scok scon scoo scor scr- scrc scrn scrs scsc scsn scso scsr scsu scub scun scur skn- skon skor skss skun skur sncc snco snns snob snoc snoo snor snos snrk snrs snub snur snus sobo sobr sobs sobu sock soco socr socs sokk sokn soko soku son- sonk sono sons sonu sook soon soor soos sorb sorn soro sorr sors soru soso soss souk soun sour sous srbc srcc srnn srno sros srub ssbn ssbr sscc sscs ssns ssoc ssrc ssrs sssb sssc ssss sub- subb subo subs suc- succ suck sucr sucs suks suku sun- sunb sunk sunn suno suns sunu suor suos sur- surc surn suro surr surs suru sus- susk suso suss susu suus