bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcit bcsc bcss bctc bcts bibb bibi bibs bicc bici bick bics biis bis- bisc bisk biss bist bisy bitc bits bitt biys bkcy bsci bscs bsic bskt bssc bsts btcc btcs btss bttb byck byik byit byki bysb bysi byss byst bysy byts cbbc cbbs cbcc cbcs cbct cbit cbsc cbsi cbtc cbyt ccbc cccb cccc ccci cccs ccic ccii ccis ccsi ccss ccst cctb cctc cctt cibc cibi cicc cici cics cict ciii ciis ciit cis- cisc cisk ciss cist cisy citb citi cits citt city ckbc ckbi ckck ckcs ckcy cksb ckst cktb ckts ckty cscb cscc csci cscs csib csik csis csit csks cstc csts csys ctbi ctbs ctic ctsc ctss ctts cybb cybc cybi cyc- cycb cycc cycs cyst cyt- cytb cyy- cyyc i-by ibcs ibis ibss ibtb ibtc ibts ibyi icbc icbs iccb iccc icci iccs icct icis icks icky icsb icsc icsi icss icst icts iiii iiis iiit iisc iisi iist iitt ikki ikky isbt iscc isci iscs isct isic isis isit issc issi isss issy istc isti ists isty isys itbs itby itcs itic itis itsi itsy itty k-ci kbbb kbbc kbbi kbbk kbbs kbbt kbcb kbci kbck kbcs kbct kbcy kbib kbic kbik kbis kbit kbiy kbkb kbkk kbky kbsb kbsi kbsk kbss kbst kbsy kbtb kbtc kbtk kbts kbtt kbyb kbyi kbys kcbc kcbi kcbk kcbs kccb kccc kcci kcck kcct kccy kcic kcii kcis kcit kckc kckk kcky kcsb kcsc kcsi kcss kcst kcsy kctb kctc kcti kcty kcyk kcys kcyt kcyy kibb kibc kibi kibs kibt kiby kicb kicc kick kics kict kicy kiic kiii kiik kiis kiit kikc kiki kikk kikt kisc kisi kisk kiss kist kisy kitc kiti kits kitt kity kiyi kiyk kiys kkbb kkbi kkbs kkbt kkcb kkci kkck kkcs kkct kkcy kkic kkik kkit kkkk kksi kkss kkst kktc kktk kkts kkty kkyc kkys kkyy ksbc ksbi ksbs ksby kscb ksci ksck kscs kscy ksib ksii ksik ksis ksit ksiy kskb kskk ksks ksky kssi ksss ksst kstb kstc ksti kstk ksts kstt ksty ksyc ksyy ktbb ktbc ktbt ktby ktcc ktck ktcs ktcy ktib ktic ktik ktis ktkb ktkc ktkk ktks ktkt ktsc ktst ktsy kttc ktti kttk ktts kttt ktty kybb kybc kybi kyby kycc kyck kycs kyct kyis kykc kykk kyks kyky kysc kysk kyst kytc kyti kyts kytt kyty kyyi kyyk kyys kyyt kyyy s-ib s-ic s-ii sbbs sbcc sbcs sbct sbic sbsi sbst sbtc sbtk scbi sccc sccs scct sccy sci- scic scis scit sck- scsc scsi scst sctc scts sibc sibi sibs siby sicc sici sick sics siik siit siki siks sisc sisi sisk siss sist sisy sit- sitc siti sits sitt sity siyi skic skik skis skit skss sky- skys skyy ssby sscc ssci sscs ssis ssit sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stib stic stik stis stit stks stsi stss sttc styk stys syck syik syis syss syst sytt syyk tbbs tbcb tbcc tbit tbst tcbs tcby tccc tctc tcts tibi tibs ticc tick tics tiit tiki tiky tisb tisi tiss tist titc titi tits titt tiyi tkts tsbc tscc tsis tsks tssi tsst tstc tsts tsys ttbb ttss tttt ttys tybi tyck tyik tyss tyst tyti tytt tyty ybbs yccc ycsb yctc yisk yiss yist yiti yksc ykyt ysby ysii ysyb ytky yyyy