-er -ey eee eek eeo eer ees eet eey eie eii eik eio eir eis eit eke eki eko ekr eks ekt eky eo- eoe eoi eok eoo eor eos eot ere eri erk ero err ers ert ery es- ese esi esk eso esr ess est esy ete eti etk eto etr ets ett ety eye eyo eyr eys eyt ie- iee iei iek ier ies iet iey iie iii iio iir iis iit ike iki ikk iko ikr iks ikt io- ioe ioi ioo ior ios iot ir- ire iri irk iro irr irs irt iry is- ise isi isk iso isr iss ist isy ite iti itk ito its itt ity iye iyo iyr iys iyt iyy k-t ke- kee kei kek keo ker kes ket key kie kii kik kio kir kis kit kke kki kkk kkr kks kkt kky koe koi kok koo kor kos kot koy kri krk kro krr krs krt kry kse ksi ksk kso ksr kss kst kte ktk kto ktr kts ktt kye kyo kyr kys kyt o-i oee oei oeo oer oes oet oey oie oii oik oio oir ois oit oke oki okk oko okr oks oo- ooi ook ooo oor oos oot or- ore ori ork oro orr ors ort ory os- ose osi osk oso osr oss ost ot- ote oti otk oto otr ots ott oye oyi oyo oys re- ree rei rek reo rer res ret rey rie rii rik rio rir ris rit riy rke rkk rko rks rkt rky roe roi rok roo ror ros rot roy rri rrk rrr rrs rrt rse rsi rsk rso rsr rss rst rte rti rtk rto rtr rts rtt rty ry- rye ryk ryo ryr rys ryy se- see sei sek seo ser ses set sey sie sii sik sio sir sis sit sk- ske ski skk sko skr sks skt sky soe soi sok soo sor sos sot soy sr- sre sri srk sro srr srs srt sry ss- sse ssi ssk sso ssr sss sst ste sti stk sto str sts stt sty sy- sye syi syk syr sys syt te- tee tei tek teo ter tes tet tey tie tii tik tio tir tis tit tiy tke tkk tko tkr tks tkt tky to- toe toi tok too tor tos tot toy tre tri trk tro trr trs trt try tse tsi tsk tso tsr tss tst tsy tte tti ttk tto ttr tts ttt tty tye tyo tyr tys tyt yee yei yek yeo yer yes yet yey yie yii yio yir yis yit yki ykk yoe yoi yok yoo yor yos yot yoy yre yro yrs yrt yse ysi ysk yso ysr yss yst ysy yte ytk yto ytr yts ytt yye yys yyt yyy