bbb bbc bbd bbf bbk bbo bbr bbs bcb bcc bcd bcf bck bco bcr bcs bdb bdc bdd bdf bdk bdo bdr bds bfb bfc bfd bff bfo bfr bfs bkb bkc bkf bkk bko bkr bks bob boc bod bof bok boo bor bos brb brd brf brk bro brr brs bsb bsc bsd bsf bsk bso bsr bss c-- cbb cbc cbd cbf cbk cbo cbr cbs ccb ccc ccd ccf cck cco ccr ccs cdb cdc cdd cdf cdk cdo cdr cds cfb cfc cfd cff cfk cfo cfr cfs ckb ckc ckd cko cks co- cob coc cod cof cok coo cor cos crb crc crd crf crk cro crr crs csb csc csd csf csk cso csr css dbb dbc dbd dbf dbk dbo dbr dbs dcb dcc dcd dcf dck dco dcr dcs ddb ddc ddd ddf ddk ddo ddr dds dfb dfc dfd dff dfk dfo dfr dfs dkb dkc dkk dko dkr dks dob doc dod dof dok doo dor dos drb drc drd drk dro drr drs dsb dsc dsd dsf dsk dso dsr dss fbb fbc fbd fbf fbk fbo fbr fbs fcb fcc fcd fcf fck fco fcr fcs fdb fdc fdd fdf fdk fdo fdr fds ffc ffd fff ffk ffo ffr ffs fkb fkc fkf fkk fob foc fof fok foo for fos frb frc frd frf frk fro frr frs fsb fsc fsd fsf fsk fso fsr fss kbb kbc kbd kbf kbk kbo kbr kbs kcb kcc kcd kck kcr kcs kdb kdc kdf kdk kdo kdr kds kfc kfd kff kfo kfs kkb kkc kkk kkr kks kob koc kod kof kok koo kor kos krc krd krf krk kro krr krs ksb ksc ksd ksf ksk kso ksr kss ob- obb obc obd obf obk obo obr obs oc- ocb occ ocd ocf ock oco ocr ocs odb odc odd odf odo odr ods of- ofb ofc ofd off ofo ofr ofs okb okc okd okk oko okr oks oo- oob ooc ood oof ook ooo oor oos or- orb orc ord orf ork oro orr ors os- osb osc osd osf osk oso osr oss rbb rbc rbd rbf rbk rbo rbr rbs rcb rcc rcd rcf rco rcr rcs rdb rdc rdd rdf rdo rdr rds rfb rfc rfd rff rfk rfo rfr rfs rkb rkc rkf rkk rko rks rob roc rod rof rok roo ror ros rrb rrc rrd rrf rrk rrr rrs rsb rsc rsd rsf rsk rso rsr rss sbb sbc sbd sbf sbk sbo sbr sbs scb scc scd scf sck sco scr scs sdb sdc sdd sdf sdk sdo sdr sds sfb sfc sfd sff sfk sfo sfr sfs sk- skb skc skd skf skk sko skr sks sob soc sod sof sok soo sor sos sr- srb src srd srf srk sro srr srs ss- ssb ssc ssd ssf ssk sso ssr sss

bbbb bbbs bbdd bbdo bbfc bbrc bcbc bcbs bccc bccs bcds bcfc bcof bcor bcos bcrs bcsc bcss bd-r bdbc bddc bdos bdsd bfcs bffs bfsr bobb bobo bobs bock boco bocs bodb bodo bods bofd boff bofs boko boks boob booc bood boof book boor boos bor- bord borf bork boro borr bors bosc bosk boso boss brcb brdo brds brfc brkb brob broc brod brok broo bror bros brrr brrs brsb brsr bsbd bscs bsfc bsff bsfs bsod bsos bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcr cbcs cbdb cbdc cbdo cbds cbfb cbfc cbko cbkr cbrd cbsc ccbc cccb cccc cccf cccs ccdc ccdf ccdr ccds ccfc ccfd ccff ccob ccoc ccod ccrc ccrf ccrs ccsd ccsf ccss cd-r cdbf cdcs cddb cddr cdfs cdos cdrs cdss cfbc cfbr cfbs cfcb cfcf cfco cfcs cfds cffb cffr cfor cfos cfrb ckbc ckck ckco ckcs ckdo ckfr ckob ckoc ckoo ckor ckos ckrc ckrd cksb ckso cobb cobo cobs cock coco codd cods cofc coff cofs cok- coko coob cood coof cook coos cor- corb corc cord corf cork coro corr cors cosc coso coss crbc crcc crcr crdc crfc crfs crkc crob croc crod crok croo cror crss csbf cscb cscc cscd cscf csco cscr cscs csdb csdr csfc csfr csks csob csor csos csrc csrd csrs cssd cssr d-bo dbcc dbcs dbfc dbfo dbfs dbos dbrs dbss dcbc dccb dccc dccs dcdb dcds dcfc dcfs dcos dcrk dcsc dcss dddd ddoc ddrc ddss dfcc dfco dfcs dfds dfrf dkdc dobb dobs dock doco docs dod- dodd dodo dods doff doko doob dood doof dook door doos dorc dord dorf dork doro dorr dors dosk doso doss drbc drfc drob drod drof drrs dsbc dscc dscr dscs dsdr dsfc dsos dsrc dsrr dssc f--k fbrs fbsd fcbs fccf fcds fcsc fdoc fdos ffcc ffff ffrr ffss fobs fock foco focs fofo food foof fook foos for- forb ford fork foro forr fors fosb foso foss frbc frcc frfc frob fros frsb frsc frso fscb fscc fsck fsfo fssc fssf k-os kbbb kbbc kbbd kbbf kbbk kbbo kbbr kbbs kbcb kbck kbco kbcr kbcs kbdb kbdf kbdo kbdr kbds kbfb kbfc kbff kbfk kbfo kbfr kbfs kbkb kbkf kbkk kbko kbkr kbob kboc kbod kbok kboo kbos kbrb kbrc kbrd kbrf kbrk kbro kbsb kbsk kbso kbsr kbss kcbc kcbd kcbf kcbk kcbr kcbs kccb kccc kccd kcck kccr kcdc kcdd kcdr kcds kcfb kcfc kcfd kcfo kckc kckf kckk kcko kckr kcob kcof kcor kcos kcrc kcro kcrr kcrs kcsb kcsc kcsd kcsf kcsr kcss kdbb kdbr kdbs kdcc kdcd kdco kdcr kddb kddc kddd kddf kddk kddr kdfc kdfo kdfr kdkb kdkd kdkk kdko kdkr kdoc kdok kdrb kdrf kdro kdrs kdsc kdsd kdsk kdsr kdss kfbc kfbk kfcd kfcf kfco kfcr kfcs kffb kfff kffk kfkb kfok kfoo kfor kfrc kfrd kfro kfrr kfrs kfsd kfsk kfsr kkbb kkbd kkbo kkbr kkbs kkcb kkcd kkck kkco kkcr kkcs kkdc kkdd kkdo kkfr kkfs kkkk kkob kkoo kkor kkrb kkrc kkrf kkrk kkro kkrr kkrs