bbbb bbbs bbci bboy bbyo 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 bisy biys bkcy bobb bobi bobo bobs boby bock boco bocs boi- boii bois boki boko boks boob booc book boos bosc bosi bosk boso boss boyi boyo boys bsci bscs bsic bsos bssc byck byik byki byob byoc byoi byos bysb bysi byso byss bysy 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 cisy ckbc ckbi ckck ckco ckcs ckcy ckob ckoc ckoi ckoo ckos ckoy cksb ckso cobb cobi cobo cobs coby cock coco cois cok- coko coky coob cook coos cosc cosi coso coss cosy coyo coys cscb cscc csci csco cscs csib csik csio csis csks csob csos csys cybb cybc cybi cybo cyc- cycb cycc cycs cyy- cyyc i-by ibcs ibis ibos ibss ibyi icbc icbs iccb iccc icci icco iccs icis icks icky icoc icos icsb icsc icsi icss iiii iiio iiis iioi iioo iios iisc iisi ikki ikko ikky ikoo iobi ioby ioci ioii ioio ioko iooi iooo ioos ioso iscc isci isco iscs isic isis isko iso- isoc isok isos issc issi isso isss issy isys iyos k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbs kbcb kbci kbck kbco kbcs kbcy kbib kbic kbik kbio kbis kbiy kbkb kbkk kbko kbky kbob kboc kboi kbok kboo kbos kbsb kbsi kbsk kbso kbss kbsy kbyb kbyi kbyo kbys kcbc kcbi kcbk kcbs kccb kccc kcci kcck kccy kcic kcii kcis kckc kckk kcko kcky kcob kcos kcsb kcsc kcsi kcss kcsy kcyk kcys kcyy kibb kibc kibi kibo kibs kiby kicb kicc kick kics kicy kiic kiii kiik kiis kikc kiki kikk kiko kioc kioi kiok kioo kisc kisi kisk kiso kiss kisy kiyi kiyk kiys kkbb kkbi kkbo kkbs kkcb kkci kkck kkco kkcs kkcy kkic kkik kkkk kkob kkoo kkoy kksi kkss kkyc kkys kkyy kobb kobc kobi kobk kobo kobs koby kocb koci kock kocs koii kokb kokc koki kokk koko koks koky koob kooc kooi kook kooo koos kos- kosb kosc kosi koso koss kosy koyo koyy ksbc ksbi ksbs ksby kscb ksci ksck ksco kscs kscy ksib ksii ksik ksis ksiy kskb kskk ksko ksks ksky ksob ksoc ksoi ksok ksoo ksos kssi ksso ksss ksyc ksyy kybb kybc kybi kybo kyby kycc kyck kycs kyis kykc kykk kyks kyky kyok kyoo kyos kyoy kysc kysk kyyi kyyk kyyo kyys kyyy obbo obby obis obkb oboi obok obos oboy obss ocbc occc occi ocis ocks ocos ocys oici oick oiii oiko oiks oios oisc okby okic okko okok oksi okso okyo oobi ooby ooky oooo ooos oosi osby oscc osci osco osii osik osis oski osoi osoo osos ossb ossi osso ossy oyss s-ib s-ic s-ii s-os sbbs sbcc sbcs sbic sbsi scbi sccc sccs sccy sci- scic scio scis sck- scob scok scoo scsc scsi scso sibc sibi sibo sibs siby sicc sici sick sico sics siik siki siko siks sios sisc sisi sisk siss sisy siyi skic skik skio skis skss sky- skys skyy sobo sobs soci sock soco socs socy soic soik sois soki sokk soko sook soos sooy sosi soso soss soyo soys ssby sscc ssci sscs ssis ssoc sssb sssc sssi ssss sybo syck syco syik syis syso syss syyk ybbs yccc ycsb yisk yiss ykko yksc yobi yobo yobs yock yoik yoki yoko yoks yoky yook yosi yoso yoyo ysby ysco ysii ysyb yyyy