bbb bbc bbe bbk bbo bbs bbt bcb bcc bce bck bco bcs bct be- beb bec bee bek beo bes bet bkb bkc bke bkk bko bks bkt bob boc boe bok boo bos bot bsb bsc bse bsk bso bss bst btb btc bte btk bto bts btt c-- cbb cbc cbe cbk cbo cbs cbt ccb ccc cce cck cco ccs cct ce- ceb cec cee cek ceo ces cet ckb ckc cko cks ckt co- cob coc coe cok coo cos cot csb csc cse csk cso css cst ctb ctc cte ctk cto cts ctt ebb ebc ebe ebk ebo ebs ebt ec- ecb ecc ece eck eco ecs ect eeb eec eee eek eeo ees eet ekb ekc eke eko eks ekt eo- eob eoc eoe eok eoo eos eot es- esb esc ese esk eso ess est etb etc ete etk eto ets ett k-t kbb kbc kbe kbk kbo kbs kcb kcc kce kck kcs kct ke- keb kec kee kek keo kes ket kkb kkc kke kkk kks kkt kob koc koe kok koo kos kot ksb ksc kse ksk kso kss kst ktb ktc kte ktk kto kts ktt ob- obb obc obe obk obo obs obt oc- ocb occ ock oco ocs oct oeb oec oee oeo oes oet okb okc oke okk oko oks oo- oob ooc ook ooo oos oot os- osb osc ose osk oso oss ost ot- otb otc ote otk oto ots ott sbb sbc sbe sbk sbo sbs sbt scb scc sce sck sco scs sct se- seb sec see sek seo ses set sk- skb skc ske skk sko sks skt sob soc soe sok soo sos sot ss- ssb ssc sse ssk sso sss sst stb stc ste stk sto sts stt tbb tbc tbe tbk tbo tbs tbt tcb tcc tce tck tco tcs tct te- teb tec tee tek teo tes tet tkb tkc tke tkk tko tks tkt to- tob toc toe tok too tos tot tsb tsc tse tsk tso tss tst ttb ttc tte ttk tto tts ttt

-ose bbbb bbbs bbeb bbet bcbc bcbs bccc bccs bcec bces bcet bcos bcsc bcss bctc bcts bebb bebe bebo beck becs beeb beek bees beet beke beko beks beo- beok beos beot bes- bese besk beso bess best betc bete beto bets bett bobb bobe bobo bobs boce bock boco bocs boec boee boeo boes boet boke boko boks boob booc booe book boos boot bosc bose bosk boso boss bost botb bote boto bots bott bscs bseb bsec bsee bses bset bskt bsos bssc bsse bsts btcc btcs btec btek btob btss bttb c-bo cbbc cbbs cbcc cbce cbcs cbct cbec cbee cbet cbko cbot cbsc cbse cbtc ccbc cccb cccc cccs ccee ccob ccoc ccss ccst cctb cctc cctt cebs cec- cece ceco cecs cect ceeb ceec cees ceke ceos cesc cese cess cest cet- cete ceto cets ckbc ckbe ckck ckco ckcs ckob ckoc ckoo ckos ckot cksb ckso ckst cktb ckts cobb cobe cobo cobs coce cock coco coct coes cok- coke coko coob cook coos coot cosc cose coso coss cost cotb cotc cote coto cots cott cscb cscc csce csco cscs csec csee cset csks csob csos csot csse cstc csto csts ctbs ctec ctos ctot ctsc ctss ctts ebbc ebbo ebbs ebcc ebes eboe eboo ebos ecbc ecbe eccb eccc ecce ecco ecct eces ecko ecks eco- ecos ecot ecsc ecse ecss ect- ectc ecto ects eecs eeee eees eeke eeks eeoc eese eesk eetc eete eets ekco ekeb ekek ekes eket ekos eoes eost eotc eoto eots esbo esbs escb esce esco escs esee esek eseo eses eset eske esko esks eso- esok esos esse esso esst estc este esto ests etbc etcc etco etcs etec etee etes etoe etok etos ette etto k-os kbbb kbbc kbbe kbbk kbbo kbbs kbbt kbcb kbce kbck kbco kbcs kbct kbeb kbec kbee kbek kbeo kbes kbet kbkb kbkk kbko kbob kboc kboe kbok kboo kbos kbot kbsb kbsk kbso kbss kbst kbtb kbtc kbte kbtk kbto kbts kbtt kcbc kcbk kcbs kccb kccc kcck kcct kceb kcec kcee kceo kcet kckc kckk kcko kcob kcoe kcos kcot kcsb kcsc kcse kcss kcst kctb kctc kcte kcto kebb kebc kebe kebt keck keco keek kees keet kekb kekc keke keko keks keok keos kesb kesc kesk keso kess kest ket- ketc kete ketk keto kets kett kkbb kkbe kkbo kkbs kkbt kkcb kkck kkco kkcs kkct kkkk kkob kkoo kkot kkse kkss kkst kktc kktk kkts kobb kobc kobe kobk kobo kobs kocb kock kocs koct koes kokb kokc koke kokk koko koks koob kooc kook kooo koos koot kos- kosb kosc kose koso koss kost kotb kotc kote kotk koto kots kott ksbc ksbs kscb ksce ksck ksco kscs ksec ksee ksek kseo kset kskb kske kskk ksko ksks ksob ksoc ksok ksoo ksos ksse ksso ksss ksst kstb kstc kste kstk ksto ksts kstt ktbb ktbc ktbt ktcc ktce ktck ktco ktcs ktec ktee ktek ktkb ktkc ktke ktkk ktko ktks ktkt ktob ktoc ktoe ktok ktoo ktot ktsc ktso ktst kttc kttk ktto ktts kttt o-eo obbo obec obes obet obkb oboe obok obos obot obss obst obts ocbc occc occt oce ocee ocet ocke ocks ocos oct- octe octo octs oec- oecc oeec oese oest okes oket okko okok okot okso okto oobe ooes oooo ooos oose oost ootb oots osbe oscc osce osco osec osee osek oses oset osoo osos ossb osse osso ostc oste osts otbs otee otes oto- otoe otok otoo otos otse otso otte otto otts s-os sbbs sbcc sbcs sbct sbot sbse sbst sbtc sbtk sccc scce sccs scct scec scee scet sck- scob scok scoo scot scsc scso scst sctc scto scts se-c se-e se-k se-o se-s se-t sebe sebo sebs sebt sec- secc sece seck seco secs sect seeb seec seek sees seet seke sekk seko sekt seoc seok sesc sese