iii iio iir iis iit io- ioi ioo ior ios iot ir- iri iro irr irs irt iry is- isi iso isr iss ist isy iti ito its itt ity iyo iyr iys iyt iyy o-i oii oio oir ois oit oo- ooi ooo oor oos oot or- ori oro orr ors ort ory os- osi oso osr oss ost ot- oti oto otr ots ott oyi oyo oys rii rio rir ris rit riy roi roo ror ros rot roy rri rrr rrs rrt rsi rso rsr rss rst rti rto rtr rts rtt rty ry- ryo ryr rys ryy sii sio sir sis sit soi soo sor sos sot soy sr- sri sro srr srs srt sry ss- ssi sso ssr sss sst sti sto str sts stt sty sy- syi syr sys syt tii tio tir tis tit tiy to- toi too tor tos tot toy tri tro trr trs trt try tsi tso tsr tss tst tsy tti tto ttr tts ttt tty tyo tyr tys tyt yii yio yir yis yit yoi yoo yor yos yot yoy yro yrs yrt ysi yso ysr yss yst ysy yto ytr yts ytt yys yyt yyy