-ic b-u bbb bbc bbi bbs bbt bbu bby bcb bcc bci bcs bct bcu bcy bi- bib bic bii bis bit biu biy bsb bsc bsi bss bst bsu bsy btb btc bti bts btt btu bty bub buc bui bus but buu buy by- byc byi bys byt byu c-- cbb cbc cbi cbs cbt cbu cby ccb ccc cci ccs cct ccu ci- cib cic cii cis cit ciu csb csc csi css cst csu csy ctb ctc cti cts ctt ctu cty cub cuc cui cus cut cuu cuy cyb cyc cys cyt ibb ibc ibi ibs ibt ibu iby icb icc ici ics ict icu icy iib iic iii iis iit iiu is- isb isc isi iss ist isu isy itb itc iti its itt itu ity iu- iub iuc iui ius iut iyc iys iyt iyy sbb sbc sbi sbs sbt sbu sby scb scc sci scs sct scu sib sic sii sis sit siu ss- ssb ssc ssi sss sst ssu stb stc sti sts stt stu sty sub suc sui sus sut suu suy sy- syb syc syi sys syt syu tbb tbc tbi tbs tbt tbu tcb tcc tci tcs tct tcu tib tic tii tis tit tiu tiy tsb tsc tsi tss tst tsu tsy ttb ttc tti tts ttt ttu tty tub tuc tui tus tut tuu tuy tyc tys tyt ubb ubc ubi ubs ubt ubu uby ucb ucc uci ucs uct ucu uib uic uii uis uit uiu usb usc usi uss ust usu utb utc uti uts utt utu uty uuc uus uut uuu uyc uyi uys uyu ybc ybi ybs yby ycc yci ycs ycu ycy yii yis yit ysb ysc ysi yss yst ysu ysy ytc yts ytt ytu yui yus yut yuu yuy yyb yyc yys yyt yyu yyy

bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcit bcsc bcss bctc bcts bcuc bibb bibi bibs bicc bici bics biis bis- bisc biss bist bisu bisy bitc bits bitt bitu biys bsci bscs bsic bssc bsts btcc btcs btss bttb btus bubb bubi bubs bubu bucc buci bucs bucu buic buis buit buiu busc busi buss bust busu busy but- buti buts butt buty buus buyi buys buyu byit bysb bysi byss byst bysy byts cbbc cbbs cbcc cbcs cbct cbcu cbit cbsc cbsi cbtc cbus cbyt ccbc cccb cccc ccci cccs cccu ccic ccii ccis ccsi ccss ccst cctb cctc cctt ccuc ccus ccut cibc cibi cicc cici cics cict cicu ciii ciis ciit cis- cisc ciss cist cisy citb citi cits citt citu city ciuc cius ciyu cscb cscc csci cscs csib csis csit cstc csts csus csys ctbi ctbs ctic ctsc ctss ctsu ctts cub- cubb cubi cubs cuby cucc cuci cui- cuis cuit cusb cuss cust cusu cusy cut- cutc cuts cutt cuy- cybb cybc cybi cyc- cycb cycc cycs cyst cyt- cytb cyy- cyyc i-by ibcs ibis ibss ibtb ibtc ibts ibus ibuy ibyi icbc icbs iccb iccc icci iccs icct iccu icis icsb icsc icsi icss icst icts icub icus iiii iiis iiit iisc iisi iist iisu iitt iiuc isbt iscc isci iscs isct iscu isic isis isit issc issi isss issu issy istc isti ists isty isus isys itbs itby itcs itic itis itsi itsu itsy itty iucc iuiu iuss iust iuty s-ib s-ic s-ii sbbs sbcc sbcs sbct sbic sbsi sbst sbtc sbus scbi sccc sccs scct sccy sci- scic scis scit scsc scsi scst scsu sctc scts scub scut sibc sibi sibs sibu siby sicc sici sics sicu siit sisc sisi siss sist sisu sisy sit- sitc siti sits sitt situ sity siui sius siut siyi siyu ssby sscc ssci sscs ssis ssit sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stcu stib stic stis stit stsi stss sttc stub stuc stus stut stuy stys sub- subb subi subs suc- succ suci sucs suis suit sus- susi suss sust susu susy suti sutu suty suus suyi suyu syis syss syst sytt tbbs tbcb tbcc tbit tbst tcbs tcby tccc tccu tctc tcts tibi tibs tibu ticc tics tiit tiiu tisb tisi tiss tist titc titi tits titt titu tiyi tsbc tscc tsis tssi tsst tstc tsts tsui tsys ttbb ttss tttt ttys tubb tubs tubu tucc tuis tuit tuiu tusc tusi tuss tust tuti tuts tutt tutu tuty tuys tybi tyss tyst tyti tytt tyty tyus ubbi ubic ubii ubis ubit ucbc ucci ucsb ucsc ucst ucsu ucut uist uits usbc usbs uscc uscs usis ussb ussc usss usst ussu ussy ustb ustc usti usts usui usus utby utis utsc utti uttu uusi uuuu uyts ybbs yccc ycsb yctc yiss yist yiti ysby ysii yssu ysyb yubu yuit yust yutu yuty yuyu yyyy

-itis bbuss bcbst bibbs bibby bibic bibis bibus biccy bicsi bisby bissy bitis bitit bitsy bitti bitts bitty btstu bubby bubsy bucci bucic bucsu buici buist buisy busby buscy busic bussu bussy busti busts busty busut busuu butis butit butts butty butut buyit buysy by-by bybib bybus byssi bytyc c-bus cbtis cc-by ccccc cccii cciii ccitt cicis cicus cissy cists cisus ciuti cssii cstcc cubby cubi- cubic cubit cubub cucui cucuy cuisy cusis cussy custi cutcu cuti- cutis cutit cutts cutty cyst- cysts cytus cytyc ibity icici icist icius icscc ictic ictis ictus iiiii iisys iitti is-is isbut iscsi isisi isiti isits isitt isssc issus issuu istic istus isuus isyss itbit itics itisi itsit itsus ittti itu-t itutu iyiyi s-bus s-cis s-iii sccbc sccci scusi scut- scuts scutt scyt- sibiu sibsu sibut sicus sicut sisic sisis sissi sissu sissy sists sitby sitit sitsi sitti situs siusi siutu siuyu sssss stib- stibb stitt stsci sttic stu-i stubs stuss subbu subby subic subis subss subst succi suciu sucst suibu suici suist suits suity susic sussy susus sutci suttu sutty systs tbtbt tbutt tcbys ti-ti tibbi tibbs tibbu ticci ticts tisci tisic tisis tiss- tissi tissu tissy titii titis titti titty titus tsuyu ttttt ttusb tubbs tubby tubi- tucci tuctu