-er -ol eee eek eel eeo eep eer eet eke ekl eko ekp ekr ekt ele elk ell elo elp elr elt eo- eoe eok eol eoo eop eor eot ep- epe epl epo epp epr ept ere erk erl ero erp err ert ete etk etl eto etp etr ett k-t ke- kee kek kel keo kep ker ket kke kkk kkl kkp kkr kkt kl- klo klr klt koe kok kol koo kop kor kot kpe kpk kpl kpo kpp kpr kpt krk krl kro krp krr krt kte ktk ktl kto ktp ktr ktt l-p lee lek lel leo lep ler let lkl lkp lkr lkt lle llk lll llo llp llr llt loe lok lol loo lop lor lot lpe lpk lpl lpo lpp lpr lpt lrk lro lrp lrr lrt lte ltk ltl lto ltp ltr ltt oee oel oeo oep oer oet oke okk okl oko okp okr ole olk oll olo olp olt oo- ook ool ooo oop oor oot op- ope opk opl opo opp opr opt or- ore ork orl oro orp orr ort ot- ote otk otl oto otp otr ott p-p pee pek pel peo pep per pet pke pkl pko pkp pkr pkt ple plk pll plo plp plr plt poe pok pol poo pop por pot ppe ppk ppl ppo ppp ppr ppt pre prk prl pro prp prr prt pt- pte ptk ptl pto ptp ptr ptt re- ree rek rel reo rep rer ret rke rkk rko rkp rkt rle rll rlo rlp rlr rlt roe rok rol roo rop ror rot rpe rpk rpl rpo rpp rpr rpt rrk rrl rrp rrr rrt rte rtk rtl rto rtp rtr rtt te- tee tek tel teo tep ter tet tke tkk tkl tko tkp tkr tkt tle tlk tll tlo tlp tlr tlt to- toe tok tol too top tor tot tpe tpk tpl tpo tpp tpr tpt tre trk trl tro trp trr trt tte ttk ttl tto ttp ttr ttt