-er -ol bbb bbe bbk bbl bbo bbr bbs bbt be- beb bee bek bel beo ber bes bet bkb bke bkk bkl bko bkr bks bkt blb ble blk bll blo blr bls blt bob boe bok bol boo bor bos bot brb bre brk brl bro brr brs brt bsb bse bsk bsl bso bsr bss bst btb bte btk btl bto btr bts btt ebb ebe ebk ebl ebo ebr ebs ebt eeb eee eek eel eeo eer ees eet ekb eke ekl eko ekr eks ekt elb ele elk ell elo elr els elt eo- eob eoe eok eol eoo eor eos eot erb ere erk erl ero err ers ert es- esb ese esk esl eso esr ess est etb ete etk etl eto etr ets ett k-t kbb kbe kbk kbl kbo kbr kbs ke- keb kee kek kel keo ker kes ket kkb kke kkk kkl kkr kks kkt kl- klb klo klr kls klt kob koe kok kol koo kor kos kot krk krl kro krr krs krt ksb kse ksk ksl kso ksr kss kst ktb kte ktk ktl kto ktr kts ktt lbb lbe lbk lbl lbo lbr lbs lbt leb lee lek lel leo ler les let lkb lkl lkr lks lkt llb lle llk lll llo llr lls llt lob loe lok lol loo lor los lot lrb lrk lro lrr lrs lrt lsb lse lsk lsl lso lsr lss lst ltb lte ltk ltl lto ltr lts ltt ob- obb obe obk obl obo obr obs obt oeb oee oel oeo oer oes oet okb oke okk okl oko okr oks olb ole olk oll olo ols olt oo- oob ook ool ooo oor oos oot or- orb ore ork orl oro orr ors ort os- osb ose osk osl oso osr oss ost ot- otb ote otk otl oto otr ots ott rbb rbe rbk rbl rbo rbr rbs rbt re- reb ree rek rel reo rer res ret rkb rke rkk rko rks rkt rle rll rlo rlr rls rlt rob roe rok rol roo ror ros rot rrb rrk rrl rrr rrs rrt rsb rse rsk rsl rso rsr rss rst rtb rte rtk rtl rto rtr rts rtt sbb sbe sbk sbl sbo sbr sbs sbt se- seb see sek sel seo ser ses set sk- skb ske skk skl sko skr sks skt slb sle slk sll slo slr sls slt sob soe sok sol soo sor sos sot sr- srb sre srk srl sro srr srs srt ss- ssb sse ssk ssl sso ssr sss sst stb ste stk stl sto str sts stt tbb tbe tbk tbl tbo tbr tbs tbt te- teb tee tek tel teo ter tes tet tkb tke tkk tkl tko tkr tks tkt tle tlk tll tlo tlr tls tlt to- tob toe tok tol too tor tos tot trb tre trk trl tro trr trs trt tsb tse tsk tsl tso tsr tss tst ttb tte ttk ttl tto ttr tts ttt

-ose bbbb bbbs bbeb bbet bblb bbls bebb bebe bebo beeb beek beel beer bees beet beke beko beks bele belk bell belo bels belt beo- beok beor beos beot bere berk bero berr bers bert bes- bese besk beso bess best bete beto bets bett blbt bleb blee blek bleo bles blet blkb blls blob blok bloo blot blss blst blts bobb bobe bobo bobs boee boel boeo boer boes boet boke boko boks bole bolk boll bolo bols bolt boob booe book bool boor boos boot bor- bore bork boro borr bors bort bose bosk boso boss bost botb bote boto bots bott breb bree brek brel breo brer bres bret brkb brls brob broe brok brol broo bror bros brot brrr brrs brsb brsr brst bseb bsee bser bses bset bskt bsos bsse bsts btek btob btor btrt btss bttb ebbo ebbr ebbs ebel eber ebes eboe ebol eboo ebor ebos ebro eeee eees eeke eeks eele eels eero eers eese eesk eete eets ekeb ekek eker ekes eket ekos el-b elbe elbo elee elek eleo eler eles elet elke elko elks elle ello ells elok elos elro else elso elst elte elto elts eoes eole eolo eore eorl eost eoto eots erbb erbe ereb erel erer eres eret erke erks erle erll erob eroe erol eroo eros erre erro errs erse erso erst ertl erts esbo esbs esee esek esel eseo eser eses eset eske esko esks eso- esok esol esos esse essl esso esst este esto estr ests etbr etee etel eter etes etoe etok etos etre etro ette etto k-lo k-os kbbb kbbe kbbk kbbl kbbo kbbr kbbs kbbt kbeb kbee kbek kbel kbeo kber kbes kbet kbkb kbkk kbkl kbko kbkr kblb kble kbll kblo kblr kbls kblt kbob kboe kbok kboo kbos kbot kbrb kbre kbrk kbrl kbro kbrt kbsb kbsk kbso kbsr kbss kbst kbtb kbte kbtk kbtl kbto kbtr kbts kbtt kebb kebe kebr kebt keek keel keer kees keet kekb keke kekl keko keks kele kelk kell kelo kelt keok keol keos ker- kerb kere kerk kerl kero kerr kers kert kesb kesk keso kesr kess kest ket- kete ketk keto ketr kets kett kkbb kkbe kkbl kkbo kkbr kkbs kkbt kkkk kklb kkll kklo kkls kkob kkol kkoo kkor kkot kkrb kkre kkrk kkrl kkro kkrr kkrs kkrt kkse kksr kkss kkst kktk kktl kkts klbb klbe klbl klbs klbt kleb klee klek kleo kler kles klet klkk klkl klko klkr klks kllb klle kllk klls klob kloe klok klol kloo klor klos klrk klrr klrs klse klsr klst kltk klto kltr kltt kobb kobe kobk kobo kobr kobs koel koes kokb koke kokk koko kokr koks kolb kole kolk koll kolo kolr kols kolt koob kook kool kooo koor koos koot korb kore kork korl koro korr kors kort kos- kosb kose koso kosr koss kost kotb kote kotk koto kotr kots kott krbb krbe krbk krbl krbr krbt