-ic c-- ccc ccg cci cco ccr ccs cgc cgg cgi cgo cgr cgs ci- cic cig cii cio cir cis co- coc cog coi coo cor cos crc crg cri cro crr crs csc csg csi cso csr css gcc gcg gci gco gcr gcs ggc ggg ggi ggo ggr ggs gic gig gii gio gir gis goc gog goi goo gor gos grc grg gri gro grr grs gsc gsg gsi gso gsr gss icc icg ici ico icr ics igc igg igi igo igr igs iic iii iio iir iis io- ioc iog ioi ioo ior ios ir- irc irg iri iro irr irs is- isc isg isi iso isr iss o-i oc- occ ocg oci oco ocr ocs ogc ogg ogi ogo ogs oic oii oio oir ois oo- ooc oog ooi ooo oor oos or- orc org ori oro orr ors os- osc osg osi oso osr oss rcc rcg rci rco rcr rcs rgc rgg rgi rgo rgr rgs ric rig rii rio rir ris roc rog roi roo ror ros rrc rrg rri rrr rrs rsc rsg rsi rso rsr rss scc scg sci sco scr scs sgc sgg sgi sgo sgr sgs sic sig sii sio sir sis soc sog soi soo sor sos sr- src srg sri sro srr srs ss- ssc ssg ssi sso ssr sss