bbbb bbbs bbdd bcbc bcbs bccc bccs bcds bcsc bcss bctc bcts bdbc bddc bdsd bsbd bscs bskt bssc bssd bsts btcc btcs btdt btss bttb c-cd cbbc cbbs cbcc cbcs cbct cbdb cbdc cbds cbsc cbtc ccbc cccb cccc cccs ccdc ccds ccsd ccss ccst cctb cctc cctt cdcs cddb cdss ckbc ckck ckcs cksb ckst cktb ckts cscb cscc cscd cscs csdb csks cssd cstc cstd csts ctbs ctsc ctss ctts dbcc dbcs dbss dbtt dcbc dccb dccc dccs dcct dcdb dcds dcsc dcss dctc dcts dddd ddss ddts dkdc dsbc dscc dscs dssc dsst dstc dsts dtcc dtss kbbb kbbc kbbd kbbk kbbs kbbt kbcb kbck kbcs kbct kbdb kbds kbkb kbkk kbsb kbsk kbss kbst kbtb kbtc kbtk kbts kbtt kcbc kcbd kcbk kcbs kccb kccc kccd kcck kcct kcdc kcdd kcds kckc kckk kcsb kcsc kcsd kcss kcst kctb kctc kdbb kdbs kdcc kdcd kddb kddc kddd kddk kdkb kdkd kdkk kdkt kdsc kdsd kdsk kdss kdst kdtd kkbb kkbd kkbs kkbt kkcb kkcd kkck kkcs kkct kkdc kkdd kkdt kkkk kksd kkss kkst kktc kktk kkts ksbc ksbs kscb ksck kscs ksdc ksdk ksds kskb kskd kskk ksks ksss ksst kstb kstc kstk ksts kstt ktbb ktbc ktbt ktcc ktck ktcs ktdb ktdc ktdd ktdk ktkb ktkc ktkk ktks ktkt ktsc ktsd ktst kttc kttk ktts kttt sbbs sbcc sbcs sbct sbds sbsd sbst sbtc sbtk sccc sccs scct scdc scds sck- scsc scsd scst sctc sctd scts sdcc sddc sdds sdsc sdss sksd skss sscc sscs ssdc ssdd sssb sssc ssss sstb sstc sstd ssts stbc stbd stbs stcc stcs stds stks stss sttc sttd tbbs tbcb tbcc tbcd tbst tcbs tccc tcdd tctc tcts tddb tdss tkts tsbc tsbd tscc tsdb tsks tsst tstc tsts ttbb ttss tttt