iii iir iis iit ir- iri irr irs irt iry is- isi isr iss ist isy iti its itt ity iyr iys iyt iyy rii rir ris rit riy rri rrr rrs rrt rsi rsr rss rst rti rtr rts rtt rty ry- ryr rys ryy sii sir sis sit sr- sri srr srs srt sry ss- ssi ssr sss sst sti str sts stt sty sy- syi syr sys syt tii tir tis tit tiy tri trr trs trt try tsi tsr tss tst tsy tti ttr tts ttt tty tyr tys tyt yii yir yis yit yrs yrt ysi ysr yss yst ysy ytr yts ytt yys yyt yyy