-er -ol eee eek eel eeo eer ees eie eii eik eil eio eir eis eke eki ekl eko ekr eks ele eli elk ell elo elr els eo- eoe eoi eok eol eoo eor eos ere eri erk erl ero err ers es- ese esi esk esl eso esr ess ie- iee iei iek iel ier ies iie iii iil iio iir iis ike iki ikk ikl iko ikr iks il- ile ili ilk ill ilo ilr ils io- ioe ioi iol ioo ior ios ir- ire iri irk irl iro irr irs is- ise isi isk isl iso isr iss ke- kee kei kek kel keo ker kes kie kii kik kil kio kir kis kke kki kkk kkl kkr kks kl- kli klo klr kls koe koi kok kol koo kor kos kri krk krl kro krr krs kse ksi ksk ksl kso ksr kss lee lei lek lel leo ler les lie lii lik lil lio lir lis lkl lkr lks lle lli llk lll llo llr lls loe loi lok lol loo lor los lri lrk lro lrr lrs lse lsi lsk lsl lso lsr lss o-i oee oei oel oeo oer oes oie oii oik oil oio oir ois oke oki okk okl oko okr oks ole oli olk oll olo ols oo- ooi ook ool ooo oor oos or- ore ori ork orl oro orr ors os- ose osi osk osl oso osr oss re- ree rei rek rel reo rer res rie rii rik ril rio rir ris rke rkk rko rks rle rli rll rlo rlr rls roe roi rok rol roo ror ros rri rrk rrl rrr rrs rse rsi rsk rsl rso rsr rss se- see sei sek sel seo ser ses sie sii sik sil sio sir sis sk- ske ski skk skl sko skr sks sle sli slk sll slo slr sls soe soi sok sol soo sor sos sr- sre sri srk srl sro srr srs ss- sse ssi ssk ssl sso ssr sss