-ic c-- ccc cce ccf cci cck ccn ccs ce- cec cee cef cei cek cen ces cfc cfe cff cfi cfk cfn cfs ci- cic cie cif cii cik cin cis ckc cki cks cn- cnc cne cnf cni cnn cns csc cse csf csi csk csn css ec- ecc ece ecf eci eck ecn ecs eec eee eef eek een ees ef- efc efe eff efi efs eic eie eif eii eik ein eis ekc eke ekf eki eks en- enc ene enf eni enk enn ens es- esc ese esf esi esk esn ess fcc fce fcf fci fck fcn fcs fec fee fef fei fek fen fes ffc ffe fff ffi ffk ffn ffs fic fie fif fii fik fin fis fkc fkf fki fkk fnc fne fnf fni fnk fnn fns fsc fse fsf fsi fsk fsn fss i-f icc ice icf ici ick icn ics ie- iec iee ief iei iek ien ies ifc ife iff ifi ifn ifs iic iie iif iii iin iis ikc ike ikf iki ikk iks in- inc ine inf ini ink inn ins is- isc ise isf isi isk isn iss kcc kce kci kck kcn kcs ke- kec kee kef kei kek ken kes kfc kff kfi kfs kic kie kif kii kik kin kis kkc kke kki kkk kkn kks kn- knc kne knf kni knk knn ksc kse ksf ksi ksk ksn kss n-i ncc nce ncf nci nck ncn ncs ne- nec nee nef nei nek nen nes nfc nfe nff nfi nfk nfn nfs nic nie nif nii nik nin nis nkc nke nkf nki nkk nkn nks nnc nne nnf nni nnk nnn nns nsc nse nsf nsi nsk nsn nss scc sce scf sci sck scn scs se- sec see sef sei sek sen ses sfc sfe sff sfi sfk sfn sfs sic sie sif sii sik sin sis sk- skc ske skf ski skk sks snc sne snf sni snk snn sns ss- ssc sse ssf ssi ssk ssn sss