-ic c-- ccc cci ccp ccr ccs ci- cic cii cip cir cis cpc cpi cpp cpr cps crc cri crp crr crs csc csi csp csr css icc ici icp icr ics iic iii iip iir iis ipc ipi ipp ipr ips ir- irc iri irp irr irs is- isc isi isp isr iss p-p pcc pci pcp pcr pcs pic pii pip pir pis ppc ppi ppp ppr pps prc pri prp prr prs ps- psc psi psp psr pss rcc rci rcp rcr rcs ric rii rip rir ris rpc rpi rpp rpr rps rrc rri rrp rrr rrs rsc rsi rsp rsr rss scc sci scp scr scs sic sii sip sir sis spc spi spp spr sps sr- src sri srp srr srs ss- ssc ssi ssp ssr sss