-er -ol eee eek eel eeo eer ees eet eie eii eik eil eio eir eis eit eke eki ekl eko ekr eks ekt ele eli elk ell elo elr els elt eo- eoe eoi eok eol eoo eor eos eot ere eri erk erl ero err ers ert es- ese esi esk esl eso esr ess est ete eti etk etl eto etr ets ett ie- iee iei iek iel ier ies iet iie iii iil iio iir iis iit ike iki ikk ikl iko ikr iks ikt il- ile ili ilk ill ilo ilr ils ilt io- ioe ioi iol ioo ior ios iot ir- ire iri irk irl iro irr irs irt is- ise isi isk isl iso isr iss ist ite iti itk itl ito its itt k-t ke- kee kei kek kel keo ker kes ket kie kii kik kil kio kir kis kit kke kki kkk kkl kkr kks kkt kl- kli klo klr kls klt koe koi kok kol koo kor kos kot kri krk krl kro krr krs krt kse ksi ksk ksl kso ksr kss kst kte ktk ktl kto ktr kts ktt lee lei lek lel leo ler les let lie lii lik lil lio lir lis lit lkl lkr lks lkt lle lli llk lll llo llr lls llt loe loi lok lol loo lor los lot lri lrk lro lrr lrs lrt lse lsi lsk lsl lso lsr lss lst lte lti ltk ltl lto ltr lts ltt o-i oee oei oel oeo oer oes oet oie oii oik oil oio oir ois oit oke oki okk okl oko okr oks ole oli olk oll olo ols olt oo- ooi ook ool ooo oor oos oot or- ore ori ork orl oro orr ors ort os- ose osi osk osl oso osr oss ost ot- ote oti otk otl oto otr ots ott re- ree rei rek rel reo rer res ret rie rii rik ril rio rir ris rit rke rkk rko rks rkt rle rli rll rlo rlr rls rlt roe roi rok rol roo ror ros rot rri rrk rrl rrr rrs rrt rse rsi rsk rsl rso rsr rss rst rte rti rtk rtl rto rtr rts rtt se- see sei sek sel seo ser ses set sie sii sik sil sio sir sis sit sk- ske ski skk skl sko skr sks skt sle sli slk sll slo slr sls slt soe soi sok sol soo sor sos sot sr- sre sri srk srl sro srr srs srt ss- sse ssi ssk ssl sso ssr sss sst ste sti stk stl sto str sts stt te- tee tei tek tel teo ter tes tet tie tii tik til tio tir tis tit tke tkk tkl tko tkr tks tkt tle tli tlk tll tlo tlr tls tlt to- toe toi tok tol too tor tos tot tre tri trk trl tro trr trs trt tse tsi tsk tsl tso tsr tss tst tte tti ttk ttl tto ttr tts ttt