-er -ey eee eek een eep eer ees eey eke ekp ekr eks eky en- ene enk enn enp enr ens eny ep- epe epn epp epr eps ere erk ern erp err ers ery es- ese esk esn esp esr ess esy eye eyn eyp eyr eys ke- kee kek ken kep ker kes key kke kkk kkn kkp kkr kks kky kn- kne knk knn knp knr kpe kpk kpn kpp kpr kps krk krn krp krr krs kry kse ksk ksn ksp ksr kss kye kyn kyp kyr kys ne- nee nek nen nep ner nes ney nke nkk nkn nkp nkr nks nky nne nnk nnn nnp nns npe npn npp npr nps nre nrk nrn nrp nrr nrs nry nse nsk nsn nsp nsr nss nsy nye nyk nyn nyp nys nyy p-p pee pek pen pep per pes pey pke pkn pkp pkr pks pky pn- pne pnk pnn pnp pnr pns pny ppe ppk ppn ppp ppr pps pre prk prn prp prr prs pry ps- pse psk psn psp psr pss psy py- pye pyk pyn pyr pys re- ree rek ren rep rer res rey rke rkk rkp rks rky rnn rnp rnr rns rny rpe rpk rpn rpp rpr rps rrk rrn rrp rrr rrs rse rsk rsn rsp rsr rss ry- rye ryk ryn ryr rys ryy se- see sek sen sep ser ses sey sk- ske skk skp skr sks sky sne snk snn snp snr sns sny spe spk spn spp spr sps spy sr- sre srk srn srp srr srs sry ss- sse ssk ssn ssp ssr sss sy- sye syk syn syp syr sys yee yek yen yep yer yes yey ykk ykn yne ynk ynn ynp yns yny yps yre yrn yrp yrs yse ysk ysp ysr yss ysy yye yys yyy