-ous bbbb bbbs bbdd bbdo bbrc bcbc bcbs bccc bccs bcds bcor bcos bcrs bcru bcsc bcss bcuc bd-r bdbc bddc bdos bdsd bobb bobo bobs bobu bock boco bocs bocu bodb bodo bods bodu boko boks boku boob booc bood book boor boos bor- bord bork boro borr bors boru bosc bosk boso boss bosu boud bouk bour bous brcb brdo brds brkb brob broc brod brok broo bror bros brou brrr brrs brsb brsr bruc brud brus bsbd bscs bsod bsos bsrd bssc bssd bubb bubo bubs bubu bucc buck buco bucs bucu budb budd budo buds budu bukk buko buku bur- burb burd burk buro burr burs buru busc busk buss busu buus c-bo c-cd cbbc cbbs cbcc cbcr cbcs cbcu cbdb cbdc cbdo cbds cbko cbkr cbrd cbsc cbus ccbc cccb cccc cccs cccu ccdc ccdr ccds ccob ccoc ccod ccrc ccrs ccsd ccss ccuc ccus cd-r cdcs cddb cddr cdos cdrs cdss ckbc ckck ckco ckcs ckdo ckdu ckob ckoc ckoo ckor ckos ckrc ckrd cksb ckso cobb cobo cobs cobu cock coco cocu codd cods cok- coko coob cood cook coos cor- corb corc cord cork coro corr cors cosc coso coss coub coud couk cour cous crbc crbu crcc crcr crdc crkc crob croc crod crok croo cror crss crub crud cruk crus cscb cscc cscd csco cscr cscs csdb csdr csks csob csor csos csrc csrd csrs cssd cssr csur csus cub- cubb cubs cucc cuck cuds cuk- curb curd curo curr curs cusb cusd cusk cuso cuss cusu d-bo dbcc dbcs dbos dbrs dbss dbus dcbc dccb dccc dccs dccu dcdb dcds dcos dcrk dcsc dcss dddd ddoc ddrc ddss ddub dkdc dobb dobs dobu dock doco docs docu dod- dodd dodo dods doko doob dood dook door doos dorc dord dork doro dorr dors doru dosk doso doss doub douc doud douk dour dous drbc drob drod drou drrs drub druk drus druu dsbc dscc dscr dscs dsdr dsos dsrc dsrr dssc dub- dubb dubc dubs dubu duck duco ducs dudd dudo duds dudu duku duo- duos durk duro duru dusk duur k-os kbbb kbbc kbbd kbbk kbbo kbbr kbbs kbbu kbcb kbck kbco kbcr kbcs kbcu kbdb kbdo kbdr kbds kbkb kbkk kbko kbkr kbob kboc kbod kbok kboo kbos kbrb kbrc kbrd kbrk kbro kbru kbsb kbsk kbso kbsr kbss kbsu kbub kbuc kbud kbuk kbur kbus kbuu kcbc kcbd kcbk kcbr kcbs kcbu kccb kccc kccd kcck kccr kccu kcdc kcdd kcdr kcds kcdu kckc kckk kcko kckr kcob kcor kcos kcou kcrc kcro kcrr kcrs kcru kcsb kcsc kcsd kcsr kcss kcsu kcub kcuk kdbb kdbr kdbs kdcc kdcd kdco kdcr kddb kddc kddd kddk kddr kdkb kdkd kdkk kdko kdkr kdoc kdok kdrb kdro kdrs kdsc kdsd kdsk kdsr kdss kdsu kdub kduc kdur kdus kkbb kkbd kkbo kkbr kkbs kkcb kkcd kkck kkco kkcr kkcs kkdc kkdd kkdo kkkk kkob kkoo kkor kkrb kkrc kkrk kkro kkrr kkrs kksd kksr kkss kksu kkus kkuu kobb kobc kobk kobo kobr kobs kobu kocb kocd kock kocs kodk kodo kods kodu kokb kokc kokk koko kokr koks koku koob kooc kook kooo koor koos koou korb korc kord kork koro korr kors koru kos- kosb kosc kosd koso kosr koss kosu koub kour kous kouu krbb krbd krbk krbr krcb krcc krcd krco krcs krcu krdc krdd krdo krdr krds krdu krkc krkd krkk krko krkr krks krku krob kroc krod krok kroo kror kros krrb krrc krrk krro krrr krrs krsc krsd krsk krsr krss krsu kruc kruk krur ksbc ksbr ksbs kscb ksck ksco kscr kscs kscu ksdc ksdk ksdr ksds kskb kskd kskk ksko kskr ksks ksku ksob ksoc ksok ksoo ksor ksos ksou ksrb ksro ksrr ksrs ksso kssr ksss kssu ksub ksud ksuu kubb kubc kubd kubo kubr kubs kubu kucb kucc kucd kuco kucr kudd kudo kudu kukk kuks kuku kuok kuoo kuos kurb kurd kurk kuro kurr kurs kuru kusb kusc kusd kuso kusu kuub kuuk kuur kuuu obbo obkb obok obor obos obro obsd obsr obss obus ocbc occc ocds ocks ocos ocro ocrr ocrs ocur odbo oddd odds odoo odor odos odou odso odur odus okcu okko okok okor okro okso okur okus oocr ooku oooo ooos oord oous orbb orbo orbs orbu orco orcs ordo ords ordu orko oro- orok oror oros orro orrs orsk orso orsu orub orus oscc osco osku osoo osor osos osrd osro ossb ossd osso ossu oubs oucc oudc ouds our- ouro ours ousd ouu- rbbb rbbr rbbs rbds rbsd rbss rcbc rcbo rccb rccc rccs rcdc rcds rcos rcrd rcsc rcsd rcss rdoc rdos rdso rkos rkss rob- robb robo robs robu rocc rock roco rocs rodd rodo rods rokk roko rokr roks roku roob rood rook roor roos rorc rork roro roru rosc roso ross roub roud rouk rous rrrr rscc rscs rsdd rsds rsos rubb rubs rubu ruck rudd rudo ruds rukk ruku ruok rurc rurd ruro rurs ruru rusk ruso russ rusu ruud s-os sbbs sbcc sbcs sbds sbor sbrk sbsd sbus sccc sccs scdc scds sck- scob scok scoo scor scr- scrc scrs scsc scsd scso scsr scsu scub scud scur sdcc sdco sddc sdds sdrc sdrs sdsc sdss sdsu skor sksd skss skud skur sobo sobr sobs sobu sock soco socr socs sodd sodo sods sodu sokk soko soku sood sook soor soos sorb sord soro sorr sors soru soso soss soud souk sour sous srbc srcc sros srsd srub ssbr sscc sscs ssdc ssdd ssoc ssrc ssrs sssb sssc ssss sub- subb subd subo subs suc- succ suck sucr sucs sudd sudo suds suks suku suor suos sur- surc surd suro surr surs suru sus- susd susk suso suss susu suus ubbo uboc ubod ubos ubud ucbc ucdc ucdd ucos ucrc ucsb ucsc ucsd ucsu udbc udds udoo udos udsd uduk ukcc ukko ukok ukrc uksc ukur uocc uor- urbs urds urdu uro- urok uroo urso urss ursu uruk urur urus us-k usbc usbr