-ic c-- ccc ccf cci cck ccn ccs cfc cff cfi cfk cfn cfs ci- cic cif cii cik cin cis ckc cki cks cn- cnc cnf cni cnn cns csc csf csi csk csn css fcc fcf fci fck fcn fcs ffc fff ffi ffk ffn ffs fic fif fii fik fin fis fkc fkf fki fkk fnc fnf fni fnk fnn fns fsc fsf fsi fsk fsn fss i-f icc icf ici ick icn ics ifc iff ifi ifn ifs iic iif iii iin iis ikc ikf iki ikk iks in- inc inf ini ink inn ins is- isc isf isi isk isn iss kcc kci kck kcn kcs kfc kff kfi kfs kic kif kii kik kin kis kkc kki kkk kkn kks kn- knc knf kni knk knn ksc ksf ksi ksk ksn kss n-i ncc ncf nci nck ncn ncs nfc nff nfi nfk nfn nfs nic nif nii nik nin nis nkc nkf nki nkk nkn nks nnc nnf nni nnk nnn nns nsc nsf nsi nsk nsn nss scc scf sci sck scn scs sfc sff sfi sfk sfn sfs sic sif sii sik sin sis sk- skc skf ski skk sks snc snf sni snk snn sns ss- ssc ssf ssi ssk ssn sss