bbbb bbbs bbci bbeb bcbc bcbs bccc bcci bccs bcec bces bcie bcis bcsc bcss bebb bebe bebi beci beck becs beeb beek bees beic beik beis beke beki beks bes- bese besk bess bibb bibe bibi bibs bicc bice bici bick bics bieb bies biis bike bis- bisc bise bisk biss bsci bscs bseb bsec bsee bses bsic bssc bsse cbbc cbbs cbcc cbce cbcs cbec cbee cbsc cbse cbsi ccbc cccb cccc ccci cccs ccee ccic ccii ccis ccsi ccss cebs cec- cece ceci cecs ceeb ceec cees ceke cesc cese cesi cess cibc cibe cibi cicc cici cics ciee cies ciii ciis cis- cisc cise cisk ciss ckbc ckbe ckbi ckck ckcs cksb cscb cscc csce csci cscs csec csee csib csik csis csks csse ebbc ebbs ebcc ebes ebic ebis ecbc ecbe eccb eccc ecce ecci eces ecib ecis ecks ecsc ecse ecss eecs eeee eees eeke eeks eese eesi eesk eick eics eiec eiei eies eike eiki eiks eise eisk eiss ekeb ekek ekes ekis ekki eksi esbs escb esce esci escs esee esek eses esie esik esis eske esks esse essi i-be ibcs ibec ibes ibie ibis ibss icbc icbs iccb iccc icci iccs icec icee ices icis icke icks icsb icsc icse icsi icss iecc ieie iesc iesi iies iiie iiii iiis iisc iisi ikee ikes ikki isbe iscc isci iscs iseb isec isee ises isic isie isis issc isse issi isss k-ci kbbb kbbc kbbe kbbi kbbk kbbs kbcb kbce kbci kbck kbcs kbeb kbec kbee kbek kbes kbib kbic kbie kbik kbis kbkb kbkk kbsb kbsi kbsk kbss kcbc kcbi kcbk kcbs kccb kccc kcci kcck kceb kcec kcee kcei kcic kcie kcii kcis kckc kckk kcsb kcsc kcse kcsi kcss kebb kebc kebe kebi keck keek kees keib keii keik keis kekb kekc keke keki keks kesb kesc kesi kesk kess kibb kibc kibe kibi kibs kicb kicc kice kick kics kies kiic kiii kiik kiis kikc kiki kikk kisc kise kisi kisk kiss kkbb kkbe kkbi kkbs kkcb kkci kkck kkcs kkic kkik kkkk kkse kksi kkss ksbc ksbi ksbs kscb ksce ksci ksck kscs ksec ksee ksei ksek ksib ksii ksik ksis kskb kske kskk ksks ksse kssi ksss s-ib s-ic s-ii sbbs sbcc sbcs sbic sbse sbsi scbi sccc scce sccs scec scee sci- scic scie scis sck- scsc scsi se-c se-e se-i se-k se-s sebe sebi sebs sec- secc sece seck secs seeb seec seek sees seie seii seik seis seke seki sekk sesc sese sesi sess sibc sibe sibi sibs sicc sice sici sick sics siec siek sies siik sike siki siks sisc sise sisi sisk siss skee skei skes skic skie skik skis skss sscc ssce ssci sscs ssec ssee sses ssis sssb sssc sssi ssss