-ic c-- ccc cci cck ccn cco ccr ccs ci- cic cii cik cin cio cir cis ckc cki cko cks cn- cnc cni cnn cno cnr cns co- coc coi cok con coo cor cos crc cri crk crn cro crr crs csc csi csk csn cso csr css icc ici ick icn ico icr ics iic iii iin iio iir iis ikc iki ikk iko ikr iks in- inc ini ink inn ino inr ins io- ioc ioi ion ioo ior ios ir- irc iri irk irn iro irr irs is- isc isi isk isn iso isr iss kcc kci kck kcn kcr kcs kic kii kik kin kio kir kis kkc kki kkk kkn kkr kks kn- knc kni knk knn kno knr koc koi kok kon koo kor kos krc kri krk krn kro krr krs ksc ksi ksk ksn kso ksr kss n-i ncc nci nck ncn nco ncr ncs nic nii nik nin nio nir nis nkc nki nkk nkn nko nkr nks nnc nni nnk nnn nno nns no- noc noi nok non noo nor nos nrc nri nrk nrn nro nrr nrs nsc nsi nsk nsn nso nsr nss o-i oc- occ oci ock ocn oco ocr ocs oic oii oik oin oio oir ois okc oki okk oko okr oks on- onc oni onk onn ono onr ons oo- ooc ooi ook oon ooo oor oos or- orc ori ork orn oro orr ors os- osc osi osk osn oso osr oss rcc rci rcn rco rcr rcs ric rii rik rin rio rir ris rkc rkk rko rks rnc rni rnn rno rnr rns roc roi rok ron roo ror ros rrc rri rrk rrn rrr rrs rsc rsi rsk rsn rso rsr rss scc sci sck scn sco scr scs sic sii sik sin sio sir sis sk- skc ski skk sko skr sks snc sni snk snn sno snr sns soc soi sok son soo sor sos sr- src sri srk srn sro srr srs ss- ssc ssi ssk ssn sso ssr sss