-er -ol bbb bbe bbk bbl bbo bbr bbs be- beb bee bek bel beo ber bes bkb bke bkk bkl bko bkr bks blb ble blk bll blo blr bls bob boe bok bol boo bor bos brb bre brk brl bro brr brs bsb bse bsk bsl bso bsr bss ebb ebe ebk ebl ebo ebr ebs eeb eee eek eel eeo eer ees ekb eke ekl eko ekr eks elb ele elk ell elo elr els eo- eob eoe eok eol eoo eor eos erb ere erk erl ero err ers es- esb ese esk esl eso esr ess kbb kbe kbk kbl kbo kbr kbs ke- keb kee kek kel keo ker kes kkb kke kkk kkl kkr kks kl- klb klo klr kls kob koe kok kol koo kor kos krk krl kro krr krs ksb kse ksk ksl kso ksr kss lbb lbe lbk lbl lbo lbr lbs leb lee lek lel leo ler les lkb lkl lkr lks llb lle llk lll llo llr lls lob loe lok lol loo lor los lrb lrk lro lrr lrs lsb lse lsk lsl lso lsr lss ob- obb obe obk obl obo obr obs oeb oee oel oeo oer oes okb oke okk okl oko okr oks olb ole olk oll olo ols oo- oob ook ool ooo oor oos or- orb ore ork orl oro orr ors os- osb ose osk osl oso osr oss rbb rbe rbk rbl rbo rbr rbs re- reb ree rek rel reo rer res rkb rke rkk rko rks rle rll rlo rlr rls rob roe rok rol roo ror ros rrb rrk rrl rrr rrs rsb rse rsk rsl rso rsr rss sbb sbe sbk sbl sbo sbr sbs se- seb see sek sel seo ser ses sk- skb ske skk skl sko skr sks slb sle slk sll slo slr sls sob soe sok sol soo sor sos sr- srb sre srk srl sro srr srs ss- ssb sse ssk ssl sso ssr sss

-ose bbbb bbbs bbeb bblb bbls bebb bebe bebo beeb beek beel beer bees beke beko beks bele belk bell belo bels beo- beok beor beos bere berk bero berr bers bes- bese besk beso bess bleb blee blek bleo bles blkb blls blob blok bloo blss bobb bobe bobo bobs boee boel boeo boer boes boke boko boks bole bolk boll bolo bols boob booe book bool boor boos bor- bore bork boro borr bors bose bosk boso boss breb bree brek brel breo brer bres brkb brls brob broe brok brol broo bror bros brrr brrs brsb brsr bseb bsee bser bses bsos bsse ebbo ebbr ebbs ebel eber ebes eboe ebol eboo ebor ebos ebro eeee eees eeke eeks eele eels eero eers eese eesk ekeb ekek eker ekes ekos el-b elbe elbo elee elek eleo eler eles elke elko elks elle ello ells elok elos elro else elso eoes eole eolo eore eorl erbb erbe ereb erel erer eres erke erks erle erll erob eroe erol eroo eros erre erro errs erse erso esbo esbs esee esek esel eseo eser eses eske esko esks eso- esok esol esos esse essl esso k-lo k-os kbbb kbbe kbbk kbbl kbbo kbbr kbbs kbeb kbee kbek kbel kbeo kber kbes kbkb kbkk kbkl kbko kbkr kblb kble kbll kblo kblr kbls kbob kboe kbok kboo kbos kbrb kbre kbrk kbrl kbro kbsb kbsk kbso kbsr kbss kebb kebe kebr keek keel keer kees kekb keke kekl keko keks kele kelk kell kelo keok keol keos ker- kerb kere kerk kerl kero kerr kers kesb kesk keso kesr kess kkbb kkbe kkbl kkbo kkbr kkbs kkkk kklb kkll kklo kkls kkob kkol kkoo kkor kkrb kkre kkrk kkrl kkro kkrr kkrs kkse kksr kkss klbb klbe klbl klbs kleb klee klek kleo kler kles klkk klkl klko klkr klks kllb klle kllk klls klob kloe klok klol kloo klor klos klrk klrr klrs klse klsr kobb kobe kobk kobo kobr kobs koel koes kokb koke kokk koko kokr koks kolb kole kolk koll kolo kolr kols koob kook kool kooo koor koos korb kore kork korl koro korr kors kos- kosb kose koso kosr koss krbb krbe krbk krbl krbr kreb kree krek kreo kres krke krkk krko krkr krks krle krob kroe krok krol kroo kror kros krrb krre krrk krrl krro krrr krrs krse krsk krsl krsr krss ksbl ksbr ksbs ksee ksek ksel kseo kser kskb kske kskk ksko kskr ksks kslb ksle kslk ksll kslo kslr ksob ksok ksol ksoo ksor ksos ksrb ksro ksrr ksrs ksse kssl ksso kssr ksss lblr lbos lbrs lebo leek leel leer lees leke lekk leko leks lele lell lelo leok leor leos lere lerk lero lese lesk less lkrs llbs lles llks llll lloo lob- lobb lobe lobo lobs loeb loes loke lokk loko lole loll lolo lols loob looe look lool loor loos lore lork loro lors lose loso loss lrrr lrse ls-r lses lsso lssr o-eo obbo obel ober obes obkb oble obls oboe obok obol obor obos obre obro obsr obss oele oere oers oese oker okes okko oklo okok okol okor okre okro okso olbo ole- oleo oler oles olle ollo olor olos oobe ooer ooes oolo oooo ooos oore oose orbb orbe orbo orbs ore- oreb orek orel oreo orer ores orke orko orle orlo oro- oroe orok oror oros orro orrs orse orsk orso osbe osee osek osel oser oses oslo osoo osor osos osro ossb osse osso rbbb rbbr rbbs rble rbsl rbss rebb rebe rebk rebo rebs reeb reek reel rees reke reko reks relb rele rell relo rels reol reos rere rero rers rese reso ress rkos rkss rlee rlls rob- robb robe robo robs roel roer roes roke rokk roko rokr roks role rolk roll rolo roob rook rool roor roos rore rork roro rose roso ross rrle rrrr rsee rsos rsre rssl s-os sbbs sber sbor sbrk sbse se-e se-k