-er eee eek eel een eep eer eie eii eik eil ein eip eir eke eki ekl ekp ekr ele eli elk ell eln elp elr en- ene eni enk enl enn enp enr ep- epe epi epl epn epp epr ere eri erk erl ern erp err ie- iee iei iek iel ien iep ier iie iii iil iin iip iir ike iki ikk ikl ikr il- ile ili ilk ill iln ilp ilr in- ine ini ink inl inn inp inr ipe ipi ipl ipn ipp ipr ir- ire iri irk irl irn irp irr ke- kee kei kek kel ken kep ker kie kii kik kil kin kip kir kke kki kkk kkl kkn kkp kkr kl- kli klr kn- kne kni knk knl knn knp knr kpe kpi kpk kpl kpn kpp kpr kri krk krl krn krp krr l-p lee lei lek lel len lep ler lie lii lik lil lin lip lir lkl lkp lkr lle lli llk lll lln llp llr lne lni lnk lnl lnn lnp lnr lpe lpi lpk lpl lpn lpp lpr lri lrk lrn lrp lrr n-i ne- nee nei nek nel nen nep ner nie nii nik nil nin nip nir nke nki nkk nkn nkp nkr nle nli nlk nll nln nlp nlr nne nni nnk nnl nnn nnp npe npi npl npn npp npr nre nri nrk nrl nrn nrp nrr p-p pee pei pek pel pen pep per pie pii pik pil pin pip pir pke pki pkl pkn pkp pkr ple pli plk pll pln plp plr pn- pne pni pnk pnl pnn pnp pnr ppe ppi ppk ppl ppn ppp ppr pre pri prk prl prn prp prr re- ree rei rek rel ren rep rer rie rii rik ril rin rip rir rke rkk rkp rle rli rll rln rlp rlr rni rnn rnp rnr rpe rpi rpk rpl rpn rpp rpr rri rrk rrl rrn rrp rrr