-er eee eef eek eel eem eep eer eet ef- efe eff efl efm efp efr eft eke ekf ekl ekp ekr ekt ele elf elk ell elm elp elr elt em- eme emf emk eml emm emp emr emt ep- epe epf epl epm epp epr ept ere erf erk erl erm erp err ert ete etf etk etl etm etp etr ett fee fef fek fel fem fep fer fet ffe fff ffk ffl ffm ffp ffr fft fkf fkk fkl fkm fkp fkt fle flf fll flm flp flr flt fme fmf fml fmm fmp fmr fmt fpe fpk fpl fpm fpp fpr fpt fre frf frk frl frm frp frr frt fte ftf ftk ftl ftm ftp ftr ftt k-t ke- kee kef kek kel kem kep ker ket kff kfm kke kkk kkl kkm kkp kkr kkt kl- klf klm klr klt kme kmf kmk kml kmm kmp kmt kpe kpf kpk kpl kpm kpp kpr kpt krf krk krl krp krr krt kte ktf ktk ktl ktm ktp ktr ktt l-p lee lef lek lel lem lep ler let lfe lff lfk lfl lfm lfp lfr lft lkl lkp lkr lkt lle llf llk lll llm llp llr llt lme lmf lmk lml lmm lmp lmr lmt lpe lpf lpk lpl lpm lpp lpr lpt lrf lrk lrm lrp lrr lrt lte ltf ltk ltl ltm ltp ltr ltt m-f m-r mee mef mek mel mem mep mer met mfe mff mfl mfm mfp mfr mft mke mkk mkl mkm mkp mkr mkt mle mlf mlk mll mlm mlp mlr mlt mme mmf mmk mml mmm mmp mmr mmt mpe mpf mpk mpl mpm mpp mpr mpt mre mrf mrk mrl mrm mrp mrr mrt mte mtf mtk mtl mtm mtp mtr mtt p-p pee pef pek pel pem pep per pet pfe pff pfk pfl pfm pfp pfr pft pke pkf pkl pkm pkp pkr pkt ple plf plk pll plm plp plr plt pme pmf pmk pml pmm pmp pmr pmt ppe ppf ppk ppl ppm ppp ppr ppt pre prf prk prl prm prp prr prt pt- pte ptf ptk ptl ptm ptp ptr ptt re- ree ref rek rel rem rep rer ret rfe rff rfk rfl rfm rfp rfr rft rke rkf rkk rkm rkp rkt rle rlf rll rlm rlp rlr rlt rme rmf rml rmm rmp rmr rmt rpe rpf rpk rpl rpm rpp rpr rpt rrf rrk rrl rrm rrp rrr rrt rte rtf rtk rtl rtm rtp rtr rtt te- tee tef tek tel tem tep ter tet tfe tff tfk tfl tfm tfp tfr tft tke tkk tkl tkm tkp tkr tkt tle tlf tlk tll tlm tlp tlr tlt tme tmf tmk tml tmm tmp tmr tmt tpe tpf tpk tpl tpm tpp tpr tpt tre trf trk trl trm trp trr trt tte ttf ttk ttl ttm ttp ttr ttt