-ic c-- ccc ccf cci cck ccn cfc cff cfi cfk cfn ci- cic cif cii cik cin ckc cki cn- cnc cnf cni cnn fcc fcf fci fck fcn ffc fff ffi ffk ffn fic fif fii fik fin fkc fkf fki fkk fnc fnf fni fnk fnn i-f icc icf ici ick icn ifc iff ifi ifn iic iif iii iin ikc ikf iki ikk in- inc inf ini ink inn kcc kci kck kcn kfc kff kfi kic kif kii kik kin kkc kki kkk kkn kn- knc knf kni knk knn n-i ncc ncf nci nck ncn nfc nff nfi nfk nfn nic nif nii nik nin nkc nkf nki nkk nkn nnc nnf nni nnk nnn