bbbb bbbs bbci bbrc bcbc bcbs bccc bcci bccs bcis bcor bcos bcrs bcsc bcss bibb bibi bibo bibs bicc bici bick bico bics biis biko bio- bioc bioi bios birb biri birk biro birr birs bis- bisc bisk biso biss bobb bobi bobo bobs bock boco bocs boi- boii bois boki boko boks boob booc book boor boos bor- bori bork boro borr bors bosc bosi bosk boso boss brcb bric brik brio bris brkb brob broc brok broo bror bros brrr brrs brsb brsr bsci bscs bsic bsos bssc c-bo cbbc cbbs cbcc cbcr cbcs cbir cbko cbkr cbsc cbsi ccbc cccb cccc ccci cccs ccic ccii ccir ccis ccob ccoc ccrc ccri ccrs ccsi ccss cibc cibi cibo cicc cici cico cicr cics ciii ciis ciko cikr ciob cior cios cirb circ ciri cirk ciro cirr cirs cis- cisc cisk cisr ciss ckbc ckbi ckck ckco ckcs ckob ckoc ckoi ckoo ckor ckos ckrc cksb ckso cobb cobi cobo cobs cock coco coir cois cok- coko coob cook coos cor- corb corc cori cork coro corr cors cosc cosi coso coss crbc crcc crcr crib cric crik cris crkc crob croc crok croo cror crss cscb cscc csci csco cscr cscs csib csik csio csir csis csks csob csor csos csrc csrs cssr ibcs ibis ibos ibrc ibri ibro ibss icbc icbs iccb iccc icci icco iccr iccs icis icks icoc icor icos icrc icrr icrs icsb icsc icsi icsr icss iiii iiio iiis iioi iioo iios iirc iirs iisc iisi iisr ikki ikko ikoo ikri iobi ioci ioii ioio ioko iooi iooo ioos iori iors ioso ircc ircs iri- iric irio iris irki irks irob iroc irrc irri irrs iscc isci isco iscr iscs isic isis isko iso- isoc isok isor isos isri issc issi isso issr isss k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbr kbbs kbcb kbci kbck kbco kbcr kbcs kbib kbic kbik kbio kbis kbkb kbkk kbko kbkr kbob kboc kboi kbok kboo kbos kbrb kbrc kbri kbrk kbro kbsb kbsi kbsk kbso kbsr kbss kcbc kcbi kcbk kcbr kcbs kccb kccc kcci kcck kccr kcic kcii kcir kcis kckc kckk kcko kckr kcob kcor kcos kcrc kcri kcro kcrr kcrs kcsb kcsc kcsi kcsr kcss kibb kibc kibi kibo kibr kibs kicb kicc kick kicr kics kiic kiii kiik kiis kikc kiki kikk kiko kikr kioc kioi kiok kioo kirb kirc kiri kirk kiro kirr kirs kisc kisi kisk kiso kisr kiss kkbb kkbi kkbo kkbr kkbs kkcb kkci kkck kkco kkcr kkcs kkic kkik kkkk kkob kkoo kkor kkrb kkrc kkrk kkro kkrr kkrs kksi kksr kkss kobb kobc kobi kobk kobo kobr kobs kocb koci kock kocs koii koir kokb kokc koki kokk koko kokr koks koob kooc kooi kook kooo koor koos korb korc kori kork koro korr kors kos- kosb kosc kosi koso kosr koss krbb krbi krbk krbr krcb krcc krci krco krcs krib krik krio kris krkc krki krkk krko krkr krks krob kroc kroi krok kroo kror kros krrb krrc krri krrk krro krrr krrs krsc krsk krsr krss ksbc ksbi ksbr ksbs kscb ksci ksck ksco kscr kscs ksib ksii ksik ksir ksis kskb kskk ksko kskr ksks ksob ksoc ksoi ksok ksoo ksor ksos ksrb ksro ksrr ksrs kssi ksso kssr ksss obbo obis obkb oboi obok obor obos obri obro obsr obss ocbc occc occi ocis ocks ocos ocro ocrr ocrs oici oick oiii oiko oiks oios oisc okic okir okko okok okor okro oksi okso oobi oocr oooo ooos oosi orbb orbi orbo orbs orci orco orcs ori- oric orio oris orko oro- orok oror oros orri orro orrs orsi orsk orso oscc osci osco osii osik osis oski osoi osoo osor osos osro ossb ossi osso rbbb rbbr rbbs rbis rbss rcbc rcbo rccb rccc rccs rcic rcis rcos rcsc rcsi rcss rib- ribo ribs ricc rick rico rics riis riki rikk rios riri rirs risc risi risk riso riss rkos rkss rob- robb robi robo robs rocc rock roco rocs roik roio roir rois roki rokk roko rokr roks roob rooi rook roor roos rorc rori rork roro rosc rosi roso ross rrrr rsbi rscc rscs rsis rsos s-ib s-ic s-ii s-os sbbs sbcc sbcs sbic sbor sbrk sbsi scbi sccc sccs sci- scic scio scir scis sck- scob scok scoo scor scr- scrc scri scrs scsc scsi scso scsr sibc sibi sibo sibs sicc sici sick sico sics siik siki siko sikr siks sior sios sirc siri sirk siro sirr sirs sisc sisi sisk siss skic skik skio skir skis skor skss sobo sobr sobs soci sock soco socr socs soic soik soir sois soki sokk soko sook soor soos sorb sori soro sorr sors sosi soso soss srbc srcc srib sris sros ssbr sscc ssci sscs ssis ssoc ssrc ssri ssrs sssb sssc sssi ssss