-ic c-- ccc cci cck cco ccr ci- cic cii cik cio cir ckc cki cko co- coc coi cok coo cor crc cri crk cro crr icc ici ick ico icr iic iii iio iir ikc iki ikk iko ikr io- ioc ioi ioo ior ir- irc iri irk iro irr kcc kci kck kcr kic kii kik kio kir kkc kki kkk kkr koc koi kok koo kor krc kri krk kro krr o-i oc- occ oci ock oco ocr oic oii oik oio oir okc oki okk oko okr oo- ooc ooi ook ooo oor or- orc ori ork oro orr rcc rci rco rcr ric rii rik rio rir rkc rkk rko roc roi rok roo ror rrc rri rrk rrr