-ic c-- ccc ccf ccg cci cck cco ccr cfc cff cfg cfi cfk cfo cfr cgc cgg cgi cgo cgr ci- cic cif cig cii cik cio cir ckc cki cko co- coc cof cog coi cok coo cor crc crf crg cri crk cro crr fcc fcf fcg fci fck fco fcr ffc fff ffg ffi ffk ffo ffr fgc fgf fgg fgi fgr fic fif fig fii fik fir fkc fkf fkg fki fkk foc fof fog foi fok foo for frc frf frg fri frk fro frr gcc gcf gcg gci gck gco gcr gfc gff gfi gfk gfo gfr ggc ggg ggi ggo ggr gic gif gig gii gik gio gir gko goc gof gog goi gok goo gor grc grf grg gri grk gro grr i-f icc icf icg ici ick ico icr ifc iff ifg ifi ifo ifr igc igf igg igi igk igo igr iic iif iii iio iir ikc ikf iki ikk iko ikr io- ioc iof iog ioi ioo ior ir- irc irf irg iri irk iro irr kcc kcg kci kck kcr kfc kff kfg kfi kfo kgc kgf kgi kgo kic kif kig kii kik kio kir kkc kki kkk kkr koc kof kog koi kok koo kor krc krf krg kri krk kro krr o-i oc- occ ocf ocg oci ock oco ocr of- ofc off ofg ofi ofo ofr ogc ogf ogg ogi ogo oic oif oii oik oio oir okc okg oki okk oko okr oo- ooc oof oog ooi ook ooo oor or- orc orf org ori ork oro orr rcc rcf rcg rci rco rcr rfc rff rfg rfi rfk rfo rfr rgc rgf rgg rgi rgk rgo rgr ric rif rig rii rik rio rir rkc rkf rkg rkk rko roc rof rog roi rok roo ror rrc rrf rrg rri rrk rrr