-ic bbb bbc bbi bbk bbo bbs bbt bcb bcc bci bck bco bcs bct bi- bib bic bii bik bio bis bit bkb bkc bkk bko bks bkt bob boc boi bok boo bos bot bsb bsc bsi bsk bso bss bst btb btc bti btk bto bts btt c-- cbb cbc cbi cbk cbo cbs cbt ccb ccc cci cck cco ccs cct ci- cib cic cii cik cio cis cit ckb ckc cki cko cks ckt co- cob coc coi cok coo cos cot csb csc csi csk cso css cst ctb ctc cti ctk cto cts ctt ibb ibc ibi ibk ibo ibs ibt icb icc ici ick ico ics ict iib iic iii iio iis iit ikb ikc iki ikk iko iks ikt io- iob ioc ioi ioo ios iot is- isb isc isi isk iso iss ist itb itc iti itk ito its itt k-t kbb kbc kbi kbk kbo kbs kcb kcc kci kck kcs kct kib kic kii kik kio kis kit kkb kkc kki kkk kks kkt kob koc koi kok koo kos kot ksb ksc ksi ksk kso kss kst ktb ktc ktk kto kts ktt o-i ob- obb obc obi obk obo obs obt oc- ocb occ oci ock oco ocs oct oib oic oii oik oio ois oit okb okc oki okk oko oks oo- oob ooc ooi ook ooo oos oot os- osb osc osi osk oso oss ost ot- otb otc oti otk oto ots ott sbb sbc sbi sbk sbo sbs sbt scb scc sci sck sco scs sct sib sic sii sik sio sis sit sk- skb skc ski skk sko sks skt sob soc soi sok soo sos sot ss- ssb ssc ssi ssk sso sss sst stb stc sti stk sto sts stt tbb tbc tbi tbk tbo tbs tbt tcb tcc tci tck tco tcs tct tib tic tii tik tio tis tit tkb tkc tkk tko tks tkt to- tob toc toi tok too tos tot tsb tsc tsi tsk tso tss tst ttb ttc tti ttk tto tts ttt

bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcit bcos bcsc bcss bctc bcts bibb bibi bibo bibs bicc bici bick bico bics biis biko bio- bioc bioi bios biot bis- bisc bisk biso biss bist bitc bito bits bitt bobb bobi bobo bobs bock boco bocs boi- boii bois boit boki boko boks boob booc book boos boot bosc bosi bosk boso boss bost botb boti boto bots bott bsci bscs bsic bskt bsos bssc bsts btcc btcs btob btss bttb c-bo cbbc cbbs cbcc cbcs cbct cbit cbko cbot cbsc cbsi cbtc ccbc cccb cccc ccci cccs ccic ccii ccis ccob ccoc ccsi ccss ccst cctb cctc cctt cibc cibi cibo cicc cici cico cics cict ciii ciis ciit ciko ciob cios cis- cisc cisk ciss cist citb citi cito cits citt ckbc ckbi ckck ckco ckcs ckob ckoc ckoi ckoo ckos ckot cksb ckso ckst cktb ckts cobb cobi cobo cobs cock coco coct cois coit cok- coko coob cook coos coot cosc cosi coso coss cost cotb cotc coti coto cots cott cscb cscc csci csco cscs csib csik csio csis csit csks csob csos csot cstc csto csts ctbi ctbs ctic ctos ctot ctsc ctss ctts ibcs ibis ibos ibot ibss ibtb ibtc ibts icbc icbs iccb iccc icci icco iccs icct icis icks icoc icos icsb icsc icsi icss icst icts iiii iiio iiis iiit iioi iioo iios iisc iisi iist iitt ikki ikko ikoo iobi ioci ioii ioio ioit ioko iooi iooo ioos ioso ioto isbt iscc isci isco iscs isct isic isis isit isko iso- isoc isok isos issc issi isso isss istc isti isto ists itbs itcs itic itis itko itoi itoo itos itsi itso itto k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbs kbbt kbcb kbci kbck kbco kbcs kbct kbib kbic kbik kbio kbis kbit kbkb kbkk kbko kbob kboc kboi kbok kboo kbos kbot kbsb kbsi kbsk kbso kbss kbst kbtb kbtc kbtk kbto kbts kbtt kcbc kcbi kcbk kcbs kccb kccc kcci kcck kcct kcic kcii kcis kcit kckc kckk kcko kcob kcos kcot kcsb kcsc kcsi kcss kcst kctb kctc kcti kcto kibb kibc kibi kibo kibs kibt kicb kicc kick kics kict kiic kiii kiik kiis kiit kikc kiki kikk kiko kikt kioc kioi kiok kioo kiot kisc kisi kisk kiso kiss kist kitc kiti kito kits kitt kkbb kkbi kkbo kkbs kkbt kkcb kkci kkck kkco kkcs kkct kkic kkik kkit kkkk kkob kkoo kkot kksi kkss kkst kktc kktk kkts kobb kobc kobi kobk kobo kobs kocb koci kock kocs koct koii koit kokb kokc koki kokk koko koks koob kooc kooi kook kooo koos koot kos- kosb kosc kosi koso koss kost kotb kotc koti kotk koto kots kott ksbc ksbi ksbs kscb ksci ksck ksco kscs ksib ksii ksik ksis ksit kskb kskk ksko ksks ksob ksoc ksoi ksok ksoo ksos kssi ksso ksss ksst kstb kstc ksti kstk ksto ksts kstt ktbb ktbc ktbt ktcc ktck ktco ktcs ktib ktic ktik ktis ktkb ktkc ktkk ktko ktks ktkt ktob ktoc ktok ktoo ktot ktsc ktso ktst kttc ktti kttk ktto ktts kttt obbo obis obit obkb oboi obok obos obot obss obst obts ocbc occc occi occt ocis ocks ocos oct- octi octo octs oici oick oiii oiko oiks oios oisc oist oitc oiti okic okko okok okot oksi okso okto oobi oooo ooos oosi oost ootb oots oscc osci osco osii osik osis oski osoi osoo osos ossb ossi osso ostc osti osts otbs otic otis otit oto- otok otoo otos otso otti otto otts s-ib s-ic s-ii s-os sbbs sbcc sbcs sbct sbic sbot sbsi sbst sbtc sbtk scbi sccc sccs scct sci- scic scio scis scit sck- scob scok scoo scot scsc scsi scso scst sctc scto scts sibc sibi sibo sibs sicc sici sick sico sics siik siit siki siko siks sios siot sisc sisi