-ic c-- ccc cci cck ccp ccr ccs ci- cic cii cik cip cir cis ckc cki cks cpc cpi cpk cpp cpr cps crc cri crk crp crr crs csc csi csk csp csr css icc ici ick icp icr ics iic iii iip iir iis ikc iki ikk ikr iks ipc ipi ipp ipr ips ir- irc iri irk irp irr irs is- isc isi isk isp isr iss kcc kci kck kcp kcr kcs kic kii kik kip kir kis kkc kki kkk kkp kkr kks kpc kpi kpk kpp kpr kps krc kri krk krp krr krs ksc ksi ksk ksp ksr kss p-p pcc pci pck pcp pcr pcs pic pii pik pip pir pis pkc pki pkp pkr pks ppc ppi ppk ppp ppr pps prc pri prk prp prr prs ps- psc psi psk psp psr pss rcc rci rcp rcr rcs ric rii rik rip rir ris rkc rkk rkp rks rpc rpi rpk rpp rpr rps rrc rri rrk rrp rrr rrs rsc rsi rsk rsp rsr rss scc sci sck scp scr scs sic sii sik sip sir sis sk- skc ski skk skp skr sks spc spi spk spp spr sps sr- src sri srk srp srr srs ss- ssc ssi ssk ssp ssr sss