-er -ol eee eek eel een eeo eer eke ekl eko ekr ele elk ell eln elo elr en- ene enk enl enn eno enr eo- eoe eok eol eon eoo eor ere erk erl ern ero err ke- kee kek kel ken keo ker kke kkk kkl kkn kkr kl- klo klr kn- kne knk knl knn kno knr koe kok kol kon koo kor krk krl krn kro krr lee lek lel len leo ler lkl lkr lle llk lll lln llo llr lne lnk lnl lnn lno lnr loe lok lol lon loo lor lrk lrn lro lrr ne- nee nek nel nen neo ner nke nkk nkn nko nkr nle nlk nll nln nlo nlr nne nnk nnl nnn nno no- noe nok nol non noo nor nre nrk nrl nrn nro nrr oee oel oen oeo oer oke okk okl oko okr ole olk oll oln olo on- one onk onl onn ono onr oo- ook ool oon ooo oor or- ore ork orl orn oro orr re- ree rek rel ren reo rer rke rkk rko rle rll rln rlo rlr rnn rno rnr roe rok rol ron roo ror rrk rrl rrn rrr