-ic c-- ccc ccf cci ccn ccs cfc cff cfi cfn cfs ci- cic cif cii cin cis cn- cnc cnf cni cnn cns csc csf csi csn css fcc fcf fci fcn fcs ffc fff ffi ffn ffs fic fif fii fin fis fnc fnf fni fnn fns fsc fsf fsi fsn fss i-f icc icf ici icn ics ifc iff ifi ifn ifs iic iif iii iin iis in- inc inf ini inn ins is- isc isf isi isn iss n-i ncc ncf nci ncn ncs nfc nff nfi nfn nfs nic nif nii nin nis nnc nnf nni nnn nns nsc nsf nsi nsn nss scc scf sci scn scs sfc sff sfi sfn sfs sic sif sii sin sis snc snf sni snn sns ss- ssc ssf ssi ssn sss