iii iio iir iis iit iki ikk iko ikr iks ikt io- ioi ioo ior ios iot ir- iri irk iro irr irs irt iry is- isi isk iso isr iss ist isy iti itk ito its itt ity iyo iyr iys iyt iyy k-t kii kik kio kir kis kit kki kkk kkr kks kkt kky koi kok koo kor kos kot koy kri krk kro krr krs krt kry ksi ksk kso ksr kss kst ktk kto ktr kts ktt kyo kyr kys kyt o-i oii oik oio oir ois oit oki okk oko okr oks oo- ooi ook ooo oor oos oot or- ori ork oro orr ors ort ory os- osi osk oso osr oss ost ot- oti otk oto otr ots ott oyi oyo oys rii rik rio rir ris rit riy rkk rko rks rkt rky roi rok roo ror ros rot roy rri rrk rrr rrs rrt rsi rsk rso rsr rss rst rti rtk rto rtr rts rtt rty ry- ryk ryo ryr rys ryy sii sik sio sir sis sit sk- ski skk sko skr sks skt sky soi sok soo sor sos sot soy sr- sri srk sro srr srs srt sry ss- ssi ssk sso ssr sss sst sti stk sto str sts stt sty sy- syi syk syr sys syt tii tik tio tir tis tit tiy tkk tko tkr tks tkt tky to- toi tok too tor tos tot toy tri trk tro trr trs trt try tsi tsk tso tsr tss tst tsy tti ttk tto ttr tts ttt tty tyo tyr tys tyt yii yio yir yis yit yki ykk yoi yok yoo yor yos yot yoy yro yrs yrt ysi ysk yso ysr yss yst ysy ytk yto ytr yts ytt yys yyt yyy