-ic c-- ccc cci ccp ccr ccs ci- cic cii cip cir cis cpc cpi cpp cpr cps crc cri crp crr crs cry csc csi csp csr css csy cyc cyp cyr cys icc ici icp icr ics icy iic iii iip iir iis ipc ipi ipp ipr ips ipy ir- irc iri irp irr irs iry is- isc isi isp isr iss isy iyc iyr iys iyy p-p pcc pci pcp pcr pcs pic pii pip pir pis ppc ppi ppp ppr pps prc pri prp prr prs pry ps- psc psi psp psr pss psy py- pyc pyr pys rcc rci rcp rcr rcs ric rii rip rir ris riy rpc rpi rpp rpr rps rrc rri rrp rrr rrs rsc rsi rsp rsr rss ry- ryc ryr rys ryy scc sci scp scr scs sic sii sip sir sis spc spi spp spr sps spy sr- src sri srp srr srs sry ss- ssc ssi ssp ssr sss sy- syc syi syp syr sys ycc yci ycp ycs ycy yii yip yir yis yps yrc yrp yrs ysc ysi ysp ysr yss ysy yyc yys yyy