-er -ol eee eef eel eeo eep eer eet ef- efe eff efl efo efp efr eft ele elf ell elo elp elr elt eo- eoe eof eol eoo eop eor eot ep- epe epf epl epo epp epr ept ere erf erl ero erp err ert ete etf etl eto etp etr ett fee fef fel feo fep fer fet ffe fff ffl ffo ffp ffr fft fle flf fll flo flp flr flt foe fof fol foo fop for fot fpe fpl fpo fpp fpr fpt fre frf frl fro frp frr frt fte ftf ftl fto ftp ftr ftt l-p lee lef lel leo lep ler let lfe lff lfl lfo lfp lfr lft lle llf lll llo llp llr llt loe lof lol loo lop lor lot lpe lpf lpl lpo lpp lpr lpt lrf lro lrp lrr lrt lte ltf ltl lto ltp ltr ltt oee oef oel oeo oep oer oet of- ofe off ofl ofo ofp ofr oft ole olf oll olo olp olt oo- oof ool ooo oop oor oot op- ope opf opl opo opp opr opt or- ore orf orl oro orp orr ort ot- ote otf otl oto otp otr ott p-p pee pef pel peo pep per pet pfe pff pfl pfo pfp pfr pft ple plf pll plo plp plr plt poe pof pol poo pop por pot ppe ppf ppl ppo ppp ppr ppt pre prf prl pro prp prr prt pt- pte ptf ptl pto ptp ptr ptt re- ree ref rel reo rep rer ret rfe rff rfl rfo rfp rfr rft rle rlf rll rlo rlp rlr rlt roe rof rol roo rop ror rot rpe rpf rpl rpo rpp rpr rpt rrf rrl rrp rrr rrt rte rtf rtl rto rtp rtr rtt te- tee tef tel teo tep ter tet tfe tff tfl tfo tfp tfr tft tle tlf tll tlo tlp tlr tlt to- toe tof tol too top tor tot tpe tpf tpl tpo tpp tpr tpt tre trf trl tro trp trr trt tte ttf ttl tto ttp ttr ttt