-er -ol eee eel eeo eer ees eev ele ell elo elr els elv eo- eoe eol eoo eor eos ere erl ero err ers erv es- ese esl eso esr ess esv eve evl evo evr evs evv lee lel leo ler les lev lle lll llo llr lls llv loe lol loo lor los lov lro lrr lrs lrv lse lsl lso lsr lss lsv lve lvl lvr lvs lvv oee oel oeo oer oes ole oll olo ols oo- ool ooo oor oos oov or- ore orl oro orr ors orv os- ose osl oso osr oss osv ov- ove ovl ovo ovs ovv re- ree rel reo rer res rev rle rll rlo rlr rls roe rol roo ror ros rov rrl rrr rrs rse rsl rso rsr rss rsv rve rvl rvo rvr rvs rvv se- see sel seo ser ses sev sle sll slo slr sls slv soe sol soo sor sos sov sr- sre srl sro srr srs srv ss- sse ssl sso ssr sss ssv sve svl svo svr svs svv v-e vee vel veo ver ves vl- vle vll vlo vls vlv voe vol voo vor vos vov vre vrr vrs vse vsl vso vsr vss vsv vvo vvr vvs vvv