-ic bbb bbc bbe bbi bbk bbs bbt bcb bcc bce bci bck bcs bct be- beb bec bee bei bek bes bet bi- bib bic bie bii bik bis bit bkb bkc bke bkk bks bkt bsb bsc bse bsi bsk bss bst btb btc bte bti btk bts btt c-- cbb cbc cbe cbi cbk cbs cbt ccb ccc cce cci cck ccs cct ce- ceb cec cee cei cek ces cet ci- cib cic cie cii cik cis cit ckb ckc cki cks ckt csb csc cse csi csk css cst ctb ctc cte cti ctk cts ctt ebb ebc ebe ebi ebk ebs ebt ec- ecb ecc ece eci eck ecs ect eeb eec eee eek ees eet eib eic eie eii eik eis eit ekb ekc eke eki eks ekt es- esb esc ese esi esk ess est etb etc ete eti etk ets ett ibb ibc ibe ibi ibk ibs ibt icb icc ice ici ick ics ict ie- iec iee iei iek ies iet iib iic iie iii iis iit ikb ikc ike iki ikk iks ikt is- isb isc ise isi isk iss ist itb itc ite iti itk its itt k-t kbb kbc kbe kbi kbk kbs kcb kcc kce kci kck kcs kct ke- keb kec kee kei kek kes ket kib kic kie kii kik kis kit kkb kkc kke kki kkk kks kkt ksb ksc kse ksi ksk kss kst ktb ktc kte ktk kts ktt sbb sbc sbe sbi sbk sbs sbt scb scc sce sci sck scs sct se- seb sec see sei sek ses set sib sic sie sii sik sis sit sk- skb skc ske ski skk sks skt ss- ssb ssc sse ssi ssk sss sst stb stc ste sti stk sts stt tbb tbc tbe tbi tbk tbs tbt tcb tcc tce tci tck tcs tct te- teb tec tee tei tek tes tet tib tic tie tii tik tis tit tkb tkc tke tkk tks tkt tsb tsc tse tsi tsk tss tst ttb ttc tte tti ttk tts ttt

bbbb bbbs bbci bbeb bbet bcbc bcbs bccc bcci bccs bcec bces bcet bcie bcis bcit bcsc bcss bctc bcts bebb bebe bebi beci beck becs beeb beek bees beet beic beik beis beit beke beki beks bes- bese besk bess best betc bete beti bets bett bibb bibe bibi bibs bicc bice bici bick bics bieb bies biet biis bike bis- bisc bise bisk biss bist bitc bite bits bitt bsci bscs bseb bsec bsee bses bset bsic bskt bssc bsse bsts btcc btcs btec btek btie btss bttb cbbc cbbs cbcc cbce cbcs cbct cbec cbee cbet cbit cbsc cbse cbsi cbtc ccbc cccb cccc ccci cccs ccee ccic ccii ccis ccsi ccss ccst cctb cctc cctt cebs cec- cece ceci cecs cect ceeb ceec cees ceke cesc cese cesi cess cest cet- cete ceti cets cibc cibe cibi cicc cici cics cict ciee cies ciii ciis ciit cis- cisc cise cisk ciss cist citb cite citi cits citt ckbc ckbe ckbi ckck ckcs cksb ckst cktb ckts cscb cscc csce csci cscs csec csee cset csib csik csis csit csks csse cstc csts ctbi ctbs ctec ctic ctsc ctss ctts ebbc ebbs ebcc ebes ebic ebis ebit ecbc ecbe eccb eccc ecce ecci ecct eces ecib ecis ecit ecks ecsc ecse ecss ect- ectc ects eecs eeee eees eeke eeks eese eesi eesk eetc eete eets eick eics eiec eiei eies eike eiki eiks eise eisk eiss eist eitb eitc eiti ekeb ekek ekes eket ekis ekki eksi esbs escb esce esci escs esee esek eses eset esie esik esis esit eske esks esse essi esst estc este ests etbc etcc etcs etec etee etes etic etik etsi ette etti i-be ibcs ibec ibes ibet ibie ibis ibss ibtb ibtc ibts icbc icbs iccb iccc icci iccs icct icec icee ices icet icis icke icks icsb icsc icse icsi icss icst icts iecc ieet ieie iesc iesi iest iett iies iiie iiii iiis iiit iisc iisi iist iitt ikee ikes ikki isbe isbt iscc isci iscs isct iseb isec isee ises iset isic isie isis isit issc isse issi isss istc iste isti ists itbe itbs itcs itec itek ites itet itic itie itis itse itsi k-ci kbbb kbbc kbbe kbbi kbbk kbbs kbbt kbcb kbce kbci kbck kbcs kbct kbeb kbec kbee kbek kbes kbet kbib kbic kbie kbik kbis kbit kbkb kbkk kbsb kbsi kbsk kbss kbst kbtb kbtc kbte kbtk kbts kbtt kcbc kcbi kcbk kcbs kccb kccc kcci kcck kcct kceb kcec kcee kcei kcet kcic kcie kcii kcis kcit kckc kckk kcsb kcsc kcse kcsi kcss kcst kctb kctc kcte kcti kebb kebc kebe kebi kebt keck keek kees keet keib keii keik keis kekb kekc keke keki keks kesb kesc kesi kesk kess kest ket- ketc kete keti ketk kets kett kibb kibc kibe kibi kibs kibt kicb kicc kice kick kics kict kies kiic kiii kiik kiis kiit kikc kiki kikk kikt kisc kise kisi kisk kiss kist kitc kite kiti kits kitt kkbb kkbe kkbi kkbs kkbt kkcb kkci kkck kkcs kkct kkic kkik kkit kkkk kkse kksi kkss kkst kktc kktk kkts ksbc ksbi ksbs kscb ksce ksci ksck kscs ksec ksee ksei ksek kset ksib ksii ksik ksis ksit kskb kske kskk ksks ksse kssi ksss ksst kstb kstc kste ksti kstk ksts kstt ktbb ktbc ktbt ktcc ktce ktck ktcs ktec ktee ktek ktib ktic ktie ktik ktis ktkb ktkc ktke ktkk ktks ktkt ktsc ktst kttc ktti kttk ktts kttt s-ib s-ic s-ii sbbs sbcc sbcs sbct sbic sbse sbsi sbst sbtc sbtk scbi sccc scce sccs scct scec scee scet sci- scic scie scis scit sck- scsc scsi scst sctc scts se-c se-e se-i se-k se-s se-t sebe sebi sebs sebt sec- secc sece seck secs sect seeb seec seek sees seet seie seii seik seis seit seke seki sekk sekt sesc sese sesi sess