-er eee eek eel eem een eep eer eke ekl ekp ekr ele elk ell elm eln elp elr em- eme emk eml emm emn emp emr en- ene enk enl enm enn enp enr ep- epe epl epm epn epp epr ere erk erl erm ern erp err ke- kee kek kel kem ken kep ker kke kkk kkl kkm kkn kkp kkr kl- klm klr kme kmk kml kmm kmp kn- kne knk knl knm knn knp knr kpe kpk kpl kpm kpn kpp kpr krk krl krn krp krr l-p lee lek lel lem len lep ler lkl lkp lkr lle llk lll llm lln llp llr lme lmk lml lmm lmn lmp lmr lne lnk lnl lnm lnn lnp lnr lpe lpk lpl lpm lpn lpp lpr lrk lrm lrn lrp lrr m-r mee mek mel mem men mep mer mke mkk mkl mkm mkn mkp mkr mle mlk mll mlm mln mlp mlr mme mmk mml mmm mmn mmp mmr mne mnk mnl mnm mnn mnp mnr mpe mpk mpl mpm mpn mpp mpr mre mrk mrl mrm mrn mrp mrr ne- nee nek nel nem nen nep ner nke nkk nkm nkn nkp nkr nle nlk nll nlm nln nlp nlr nme nmk nml nmm nmn nmp nmr nne nnk nnl nnm nnn nnp npe npl npm npn npp npr nre nrk nrl nrm nrn nrp nrr p-p pee pek pel pem pen pep per pke pkl pkm pkn pkp pkr ple plk pll plm pln plp plr pme pmk pml pmm pmn pmp pmr pn- pne pnk pnl pnm pnn pnp pnr ppe ppk ppl ppm ppn ppp ppr pre prk prl prm prn prp prr re- ree rek rel rem ren rep rer rke rkk rkm rkp rle rll rlm rln rlp rlr rme rml rmm rmn rmp rmr rnm rnn rnp rnr rpe rpk rpl rpm rpn rpp rpr rrk rrl rrm rrn rrp rrr