-ic c-- ccc cci cck cco ccs ci- cic cii cik cio cis ckc cki cko cks co- coc coi cok coo cos csc csi csk cso css icc ici ick ico ics iic iii iio iis ikc iki ikk iko iks io- ioc ioi ioo ios is- isc isi isk iso iss kcc kci kck kcs kic kii kik kio kis kkc kki kkk kks koc koi kok koo kos ksc ksi ksk kso kss o-i oc- occ oci ock oco ocs oic oii oik oio ois okc oki okk oko oks oo- ooc ooi ook ooo oos os- osc osi osk oso oss scc sci sck sco scs sic sii sik sio sis sk- skc ski skk sko sks soc soi sok soo sos ss- ssc ssi ssk sso sss