bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcos bcsc bcss bibb bibi bibo bibs bicc bici bick bico bics biis biko bio- bioc bioi bios bis- bisc bisk biso biss bobb bobi bobo bobs bock boco bocs boi- boii bois boki boko boks boob booc book boos bosc bosi bosk boso boss bsci bscs bsic bsos bssc c-bo cbbc cbbs cbcc cbcs cbko cbsc cbsi ccbc cccb cccc ccci cccs ccic ccii ccis ccob ccoc ccsi ccss cibc cibi cibo cicc cici cico cics ciii ciis ciko ciob cios cis- cisc cisk ciss ckbc ckbi ckck ckco ckcs ckob ckoc ckoi ckoo ckos cksb ckso cobb cobi cobo cobs cock coco cois cok- coko coob cook coos cosc cosi coso coss cscb cscc csci csco cscs csib csik csio csis csks csob csos ibcs ibis ibos ibss icbc icbs iccb iccc icci icco iccs icis icks icoc icos icsb icsc icsi icss iiii iiio iiis iioi iioo iios iisc iisi ikki ikko ikoo iobi ioci ioii ioio ioko iooi iooo ioos ioso iscc isci isco iscs isic isis isko iso- isoc isok isos issc issi isso isss k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbs kbcb kbci kbck kbco kbcs kbib kbic kbik kbio kbis kbkb kbkk kbko kbob kboc kboi kbok kboo kbos kbsb kbsi kbsk kbso kbss kcbc kcbi kcbk kcbs kccb kccc kcci kcck kcic kcii kcis kckc kckk kcko kcob kcos kcsb kcsc kcsi kcss kibb kibc kibi kibo kibs kicb kicc kick kics kiic kiii kiik kiis kikc kiki kikk kiko kioc kioi kiok kioo kisc kisi kisk kiso kiss kkbb kkbi kkbo kkbs kkcb kkci kkck kkco kkcs kkic kkik kkkk kkob kkoo kksi kkss kobb kobc kobi kobk kobo kobs kocb koci kock kocs koii kokb kokc koki kokk koko koks koob kooc kooi kook kooo koos kos- kosb kosc kosi koso koss ksbc ksbi ksbs kscb ksci ksck ksco kscs ksib ksii ksik ksis kskb kskk ksko ksks ksob ksoc ksoi ksok ksoo ksos kssi ksso ksss obbo obis obkb oboi obok obos obss ocbc occc occi ocis ocks ocos oici oick oiii oiko oiks oios oisc okic okko okok oksi okso oobi oooo ooos oosi oscc osci osco osii osik osis oski osoi osoo osos ossb ossi osso s-ib s-ic s-ii s-os sbbs sbcc sbcs sbic sbsi scbi sccc sccs sci- scic scio scis sck- scob scok scoo scsc scsi scso sibc sibi sibo sibs sicc sici sick sico sics siik siki siko siks sios sisc sisi sisk siss skic skik skio skis skss sobo sobs soci sock soco socs soic soik sois soki sokk soko sook soos sosi soso soss sscc ssci sscs ssis ssoc sssb sssc sssi ssss