-ic c-- ccc ccg cci ccp ccr ccs cgc cgg cgi cgp cgr cgs ci- cic cig cii cip cir cis cpc cpg cpi cpp cpr cps crc crg cri crp crr crs csc csg csi csp csr css g-p gcc gcg gci gcp gcr gcs ggc ggg ggi ggp ggr ggs gic gig gii gip gir gis gpc gpg gpi gpp gpr gps grc grg gri grp grr grs gsc gsg gsi gsp gsr gss icc icg ici icp icr ics igc igg igi igp igr igs iic iii iip iir iis ipc ipg ipi ipp ipr ips ir- irc irg iri irp irr irs is- isc isg isi isp isr iss p-p pcc pcg pci pcp pcr pcs pgc pgg pgi pgp pgr pgs pic pig pii pip pir pis ppc ppg ppi ppp ppr pps prc prg pri prp prr prs ps- psc psg psi psp psr pss rcc rcg rci rcp rcr rcs rgc rgg rgi rgp rgr rgs ric rig rii rip rir ris rpc rpg rpi rpp rpr rps rrc rrg rri rrp rrr rrs rsc rsg rsi rsp rsr rss scc scg sci scp scr scs sgc sgg sgi sgp sgr sgs sic sig sii sip sir sis spc spg spi spp spr sps sr- src srg sri srp srr srs ss- ssc ssg ssi ssp ssr sss