-er -ey eee eek eer ees eet eey eke ekr eks ekt eky ere erk err ers ert ery es- ese esk esr ess est esy ete etk etr ets ett ety eye eyr eys eyt k-t ke- kee kek ker kes ket key kke kkk kkr kks kkt kky krk krr krs krt kry kse ksk ksr kss kst kte ktk ktr kts ktt kye kyr kys kyt re- ree rek rer res ret rey rke rkk rks rkt rky rrk rrr rrs rrt rse rsk rsr rss rst rte rtk rtr rts rtt rty ry- rye ryk ryr rys ryy se- see sek ser ses set sey sk- ske skk skr sks skt sky sr- sre srk srr srs srt sry ss- sse ssk ssr sss sst ste stk str sts stt sty sy- sye syk syr sys syt te- tee tek ter tes tet tey tke tkk tkr tks tkt tky tre trk trr trs trt try tse tsk tsr tss tst tsy tte ttk ttr tts ttt tty tye tyr tys tyt yee yek yer yes yet yey ykk yre yrs yrt yse ysk ysr yss yst ysy yte ytk ytr yts ytt yye yys yyt yyy