-ic bbb bbc bbf bbi bbk bbo bbs bcb bcc bcf bci bck bco bcs bfb bfc bff bfi bfo bfs bi- bib bic bif bii bik bio bis bkb bkc bkf bkk bko bks bob boc bof boi bok boo bos bsb bsc bsf bsi bsk bso bss c-- cbb cbc cbf cbi cbk cbo cbs ccb ccc ccf cci cck cco ccs cfb cfc cff cfi cfk cfo cfs ci- cib cic cif cii cik cio cis ckb ckc cki cko cks co- cob coc cof coi cok coo cos csb csc csf csi csk cso css fbb fbc fbf fbi fbk fbo fbs fcb fcc fcf fci fck fco fcs ffc fff ffi ffk ffo ffs fib fic fif fii fik fis fkb fkc fkf fki fkk fob foc fof foi fok foo fos fsb fsc fsf fsi fsk fso fss i-f ibb ibc ibf ibi ibk ibo ibs icb icc icf ici ick ico ics ifb ifc iff ifi ifo ifs iib iic iif iii iio iis ikb ikc ikf iki ikk iko iks io- iob ioc iof ioi ioo ios is- isb isc isf isi isk iso iss kbb kbc kbf kbi kbk kbo kbs kcb kcc kci kck kcs kfc kff kfi kfo kfs kib kic kif kii kik kio kis kkb kkc kki kkk kks kob koc kof koi kok koo kos ksb ksc ksf ksi ksk kso kss o-i ob- obb obc obf obi obk obo obs oc- ocb occ ocf oci ock oco ocs of- ofb ofc off ofi ofo ofs oib oic oif oii oik oio ois okb okc oki okk oko oks oo- oob ooc oof ooi ook ooo oos os- osb osc osf osi osk oso oss sbb sbc sbf sbi sbk sbo sbs scb scc scf sci sck sco scs sfb sfc sff sfi sfk sfo sfs sib sic sif sii sik sio sis sk- skb skc skf ski skk sko sks sob soc sof soi sok soo sos ss- ssb ssc ssf ssi ssk sso sss

bbbb bbbs bbci bbfc bcbc bcbs bccc bcci bccs bcfc bcis bcof bcos bcsc bcss bfcs bffs bfsi bibb bibi bibo bibs bicc bici bick bico bics biff bifi biis biko bio- bioc bioi bios bis- bisc bisk biso biss bobb bobi bobo bobs bock boco bocs boff bofs boi- boii bois boki boko boks boob booc boof book boos bosc bosi bosk boso boss bsci bscs bsfc bsff bsfs bsic bsos bssc c-bo cbbc cbbs cbcc cbcs cbfb cbfc cbko cbsc cbsi ccbc cccb cccc cccf ccci cccs ccfc ccff ccfi ccic ccii ccis ccob ccoc ccsf ccsi ccss cfbc cfbs cfcb cfcf cfco cfcs cffb cfos cfsi cibc cibi cibo cicc cici cico cics ciff cifs ciii ciis ciko ciob cios cis- cisc cisk ciss ckbc ckbi ckck ckco ckcs ckfi ckob ckoc ckoi ckoo ckos cksb ckso cobb cobi cobo cobs cock coco cofc coff cofi cofs coif cois cok- coko coob coof cook coos cosc cosi coso coss csbf cscb cscc cscf csci csco cscs csfc csib csik csio csis csks csob csos f--k fbis fcbs fccf fcic fcii fcsc ffcc ffff ffii ffss fibs ficc fick fico fics fifc fiff fifi fifo fiii fiki fios fisc fisi fisk fiss fobs foci fock foco focs fofo fois foki foof fook foos fosb fosi foso foss fscb fscc fsck fsfi fsfo fssc fssf ibcs ibfi ibis ibos ibsf ibss icbc icbs iccb iccc iccf icci icco iccs icfb icis icks icoc icos icsb icsc icsi icss ifbb ifco ific ifis ifsb ifsc ifso iiii iiio iiis iioi iioo iios iisc iisi ikki ikko ikoo iobi ioci iofc ioii ioio ioko ioof iooi iooo ioos ioso iscc isci isco iscs isfc isic isis iskf isko iso- isoc isof isok isos issc issf issi isso isss k-ci k-os kbbb kbbc kbbf kbbi kbbk kbbo kbbs kbcb kbci kbck kbco kbcs kbfb kbfc kbff kbfi kbfk kbfo kbfs kbib kbic kbif kbik kbio kbis kbkb kbkf kbkk kbko kbob kboc kboi kbok kboo kbos kbsb kbsi kbsk kbso kbss kcbc kcbf kcbi kcbk kcbs kccb kccc kcci kcck kcfb kcfc kcfi kcfo kcic kcif kcii kcis kckc kckf kckk kcko kcob kcof kcos kcsb kcsc kcsf kcsi kcss kfbc kfbk kfcf kfco kfcs kffb kfff kffk kfio kfis kfkb kfok kfoo kfsi kfsk kibb kibc kibi kibo kibs kicb kicc kick kics kiff kifs kiic kiii kiik kiis kikc kikf kiki kikk kiko kioc kioi kiok kioo kisc kisf kisi kisk kiso kiss kkbb kkbi kkbo kkbs kkcb kkci kkck kkco kkcs kkfi kkfs kkic kkik kkkk kkob kkoo kksf kksi kkss kobb kobc kobi kobk kobo kobs kocb kocf koci kock kocs kofc koff kofi kofk kofo koii kokb kokc kokf koki kokk koko koks koob kooc kooi kook kooo koos kos- kosb kosc kosf kosi koso koss ksbc ksbi ksbs kscb ksci ksck ksco kscs ksfb ksfc ksfi ksfo ksib ksif ksii ksik ksis kskb kskf kskk ksko ksks ksob ksoc ksof ksoi ksok ksoo ksos kssi ksso ksss obbo obis obkb oboi obok obos obss ocbc occc occi ocis ocks ocos off- offc offo offs ofik oici oick oiii oiko oiks oios oisc okic okko okok oksi okso oobi ooff oofs oooo ooos oosi oscc osci osco osii osik osis oski osoi osoo osos ossb ossi osso s-ib s-ic s-ii s-os sbbs sbcc sbcs sbfc sbic sbsi scbi sccc sccs scfc scfi sci- scic scif scio scis sck- scob scok scoo scsc scsi scso sfbc sfcc sfco sfcs sffc sfio sfos sfss sibc sibi sibo sibs sicc sici sick sico sics siff sifo siik siki siko siks sios sisc sisi sisk siss skfc skic skif skik skio skis skss sobo sobs soci sock soco socs sofi sofo soic soif soik sois soki sokk soko soof sook soos sosi soso soss sscc ssci sscs ssfc ssis ssoc sssb sssc sssf sssi ssss

bbook bcock bibbo bibbs bibic bibio bibis bibos bicsi biffi biffo biffs biisk bikok bioci bioco