iii iip iir iis iit ipi ipp ipr ips ipt ir- iri irp irr irs irt is- isi isp isr iss ist iti itp its itt itz izi izz p-p pii pip pir pis pit piz ppi ppp ppr pps ppt ppz pri prp prr prs prt prz ps- psi psp psr pss pst pt- pti ptp ptr pts ptt ptz pzp pzt rii rip rir ris rit riz rpi rpp rpr rps rpt rpz rri rrp rrr rrs rrt rsi rsp rsr rss rst rti rtp rtr rts rtt rtz sii sip sir sis sit spi spp spr sps spt spz sr- sri srp srr srs srt ss- ssi ssp ssr sss sst ssz sti stp str sts stt stz szi szp szr tii tip tir tis tit tiz tpi tpp tpr tps tpt tpz tri trp trr trs trt trz tsi tsp tsr tss tst tti ttp ttr tts ttt tzs zip zir zis zit ziz zpi zpp zpr zpt zrp zrs zsi zst zsz ztr zzr zzs zzt zzz