-er -ol eee eek eel eeo eer ees eet eke ekl eko ekr eks ekt ele elk ell elo elr els elt eo- eoe eok eol eoo eor eos eot ere erk erl ero err ers ert es- ese esk esl eso esr ess est ete etk etl eto etr ets ett k-t ke- kee kek kel keo ker kes ket kke kkk kkl kkr kks kkt kl- klo klr kls klt koe kok kol koo kor kos kot krk krl kro krr krs krt kse ksk ksl kso ksr kss kst kte ktk ktl kto ktr kts ktt lee lek lel leo ler les let lkl lkr lks lkt lle llk lll llo llr lls llt loe lok lol loo lor los lot lrk lro lrr lrs lrt lse lsk lsl lso lsr lss lst lte ltk ltl lto ltr lts ltt oee oel oeo oer oes oet oke okk okl oko okr oks ole olk oll olo ols olt oo- ook ool ooo oor oos oot or- ore ork orl oro orr ors ort os- ose osk osl oso osr oss ost ot- ote otk otl oto otr ots ott re- ree rek rel reo rer res ret rke rkk rko rks rkt rle rll rlo rlr rls rlt roe rok rol roo ror ros rot rrk rrl rrr rrs rrt rse rsk rsl rso rsr rss rst rte rtk rtl rto rtr rts rtt se- see sek sel seo ser ses set sk- ske skk skl sko skr sks skt sle slk sll slo slr sls slt soe sok sol soo sor sos sot sr- sre srk srl sro srr srs srt ss- sse ssk ssl sso ssr sss sst ste stk stl sto str sts stt te- tee tek tel teo ter tes tet tke tkk tkl tko tkr tks tkt tle tlk tll tlo tlr tls tlt to- toe tok tol too tor tos tot tre trk trl tro trr trs trt tse tsk tsl tso tsr tss tst tte ttk ttl tto ttr tts ttt