-er eee eek eel eem eep eer eke ekl ekp ekr ele elk ell elm elp elr em- eme emk eml emm emp emr ep- epe epl epm epp epr ere erk erl erm erp err ke- kee kek kel kem kep ker kke kkk kkl kkm kkp kkr kl- klm klr kme kmk kml kmm kmp kpe kpk kpl kpm kpp kpr krk krl krp krr l-p lee lek lel lem lep ler lkl lkp lkr lle llk lll llm llp llr lme lmk lml lmm lmp lmr lpe lpk lpl lpm lpp lpr lrk lrm lrp lrr m-r mee mek mel mem mep mer mke mkk mkl mkm mkp mkr mle mlk mll mlm mlp mlr mme mmk mml mmm mmp mmr mpe mpk mpl mpm mpp mpr mre mrk mrl mrm mrp mrr p-p pee pek pel pem pep per pke pkl pkm pkp pkr ple plk pll plm plp plr pme pmk pml pmm pmp pmr ppe ppk ppl ppm ppp ppr pre prk prl prm prp prr re- ree rek rel rem rep rer rke rkk rkm rkp rle rll rlm rlp rlr rme rml rmm rmp rmr rpe rpk rpl rpm rpp rpr rrk rrl rrm rrp rrr