-er -ol bbb bbc bbe bbk bbl bbo bbr bbs bcb bcc bce bck bcl bco bcr bcs be- beb bec bee bek bel beo ber bes bkb bkc bke bkk bkl bko bkr bks blb blc ble blk bll blo blr bls bob boc boe bok bol boo bor bos brb bre brk brl bro brr brs bsb bsc bse bsk bsl bso bsr bss c-- cbb cbc cbe cbk cbl cbo cbr cbs ccb ccc cce cck ccl cco ccr ccs ce- ceb cec cee cek cel ceo cer ces ckb ckc cko cks cl- clb clc cle clk cll clo clr cls co- cob coc coe cok col coo cor cos crb crc cre crk crl cro crr crs csb csc cse csk csl cso csr css ebb ebc ebe ebk ebl ebo ebr ebs ec- ecb ecc ece eck ecl eco ecr ecs eeb eec eee eek eel eeo eer ees ekb ekc eke ekl eko ekr eks elb elc ele elk ell elo elr els eo- eob eoc eoe eok eol eoo eor eos erb erc ere erk erl ero err ers es- esb esc ese esk esl eso esr ess kbb kbc kbe kbk kbl kbo kbr kbs kcb kcc kce kck kcl kcr kcs ke- keb kec kee kek kel keo ker kes kkb kkc kke kkk kkl kkr kks kl- klb klc klo klr kls kob koc koe kok kol koo kor kos krc krk krl kro krr krs ksb ksc kse ksk ksl kso ksr kss lbb lbc lbe lbk lbl lbo lbr lbs lcb lcc lce lck lcl lco lcr lcs leb lec lee lek lel leo ler les lkb lkl lkr lks llb llc lle llk lll llo llr lls lob loc loe lok lol loo lor los lrb lrc lrk lro lrr lrs lsb lsc lse lsk lsl lso lsr lss ob- obb obc obe obk obl obo obr obs oc- ocb occ ock ocl oco ocr ocs oeb oec oee oel oeo oer oes okb okc oke okk okl oko okr oks olb olc ole olk oll olo ols oo- oob ooc ook ool ooo oor oos or- orb orc ore ork orl oro orr ors os- osb osc ose osk osl oso osr oss rbb rbc rbe rbk rbl rbo rbr rbs rcb rcc rce rcl rco rcr rcs re- reb rec ree rek rel reo rer res rkb rkc rke rkk rko rks rlc rle rll rlo rlr rls rob roc roe rok rol roo ror ros rrb rrc rrk rrl rrr rrs rsb rsc rse rsk rsl rso rsr rss sbb sbc sbe sbk sbl sbo sbr sbs scb scc sce sck scl sco scr scs se- seb sec see sek sel seo ser ses sk- skb skc ske skk skl sko skr sks slb slc sle slk sll slo slr sls sob soc soe sok sol soo sor sos sr- srb src sre srk srl sro srr srs ss- ssb ssc sse ssk ssl sso ssr sss

-ose bbbb bbbs bbeb bblb bbls bbrc bcbc bcbs bccc bccl bccs bcec bcer bces bcor bcos bcrs bcsc bcsl bcss bebb bebe bebo beck becs beeb beek beel beer bees beke beko beks bele belk bell belo bels beo- beok beor beos berc bere berk bero berr bers bes- bese besk beso bess bleb blee blek bleo bles blkb blls blob bloc blok bloo blrc blss bobb bobe bobo bobs boce bock boco bocs boec boee boel boeo boer boes boke boko boks bole bolk boll bolo bols boob booc booe book bool boor boos bor- bore bork boro borr bors bosc bose bosk boso boss brcb brce breb brec bree brek brel breo brer bres brkb brls brob broc broe brok brol broo bror bros brrr brrs brsb brsr bscs bseb bsec bsee bser bses bslc bsos bssc bsse c-bo cbbc cbbs cbcc cbce cbcl cbcr cbcs cbec cbee cber cbkl cbko cbkr cblb cblc cbol cbre cbrl cbsc cbse ccbc cccb cccc cccl cccs ccee ccel cclc ccls ccob ccoc ccrc ccre ccrl ccrs ccsl ccss cebs cec- cece ceco cecs ceeb ceec ceel cees ceke cel- celc cele cell celo cels ceol ceor ceos cer- cerc cere cerl cero cers cesc cese cesr cess ckbc ckbe ckck ckcl ckco ckcs cker ckob ckoc ckoo ckor ckos ckrc cksb cksl ckso clec clee clek cleo cler cles clob cloe clok cloo clor clos clro clrs clsc cobb cobe cobo cobs coce cock coco coel coes cok- coke coko col- colb cole colk coll colo cols coob cook cool coos cor- corb corc core cork corl coro corr cors cosc cose cosl coso coss crbc crcc crce crcr cre- creb crec cree creo cres crkc crkl crls crob croc croe crok crol croo cror crss cscb cscc csce cscl csco cscr cscs csec csee cser csks cslr csob csor csos csrc csrs csse cssr e-cl ebbc ebbo ebbr ebbs ebcc ebel eber ebes eboe ebol eboo ebor ebos ebro ecbc ecbe eccb eccc ecce eccl ecco eces ecko ecks eco- ecol ecos ecrc ecrl ecrr ecsc ecse ecss eecs eeee eees eeke eeks eele eels eeoc eerc eero eers eese eesk ekco ekeb ekek eker ekes ekos el-b elbe elbo elcb elce elco elec elee elek eleo eler eles elke elko elks elle ello ells elok elos elro else elso eoes eole eolo eore eorl erbb erbe ercc erce ereb erec erel erer eres erke erks erle erll erob eroc eroe erol eroo eros errc erre erro errs erse erso esbo esbs escb esce esco escr escs esee esek esel eseo eser eses eske esko esks eso- esok esol esos esse essl esso k-lo k-os kbbb kbbc kbbe kbbk kbbl kbbo kbbr kbbs kbcb kbce kbck kbcl kbco kbcr kbcs kbeb kbec kbee kbek kbel kbeo kber kbes kbkb kbkk kbkl kbko kbkr kblb kble kbll kblo kblr kbls kbob kboc kboe kbok kboo kbos kbrb kbrc kbre kbrk kbrl kbro kbsb kbsk kbso