-er -ic c-- ccc cce cci cck ccn ccr ccs ce- cec cee cei cek cen cer ces ci- cic cie cii cik cin cir cis ckc cki cks cn- cnc cne cni cnn cnr cns crc cre cri crk crn crr crs csc cse csi csk csn csr css ec- ecc ece eci eck ecn ecr ecs eec eee eek een eer ees eic eie eii eik ein eir eis ekc eke eki ekr eks en- enc ene eni enk enn enr ens erc ere eri erk ern err ers es- esc ese esi esk esn esr ess icc ice ici ick icn icr ics ie- iec iee iei iek ien ier ies iic iie iii iin iir iis ikc ike iki ikk ikr iks in- inc ine ini ink inn inr ins ir- irc ire iri irk irn irr irs is- isc ise isi isk isn isr iss kcc kce kci kck kcn kcr kcs ke- kec kee kei kek ken ker kes kic kie kii kik kin kir kis kkc kke kki kkk kkn kkr kks kn- knc kne kni knk knn knr krc kri krk krn krr krs ksc kse ksi ksk ksn ksr kss n-i ncc nce nci nck ncn ncr ncs ne- nec nee nei nek nen ner nes nic nie nii nik nin nir nis nkc nke nki nkk nkn nkr nks nnc nne nni nnk nnn nns nrc nre nri nrk nrn nrr nrs nsc nse nsi nsk nsn nsr nss rcc rce rci rcn rcr rcs re- rec ree rei rek ren rer res ric rie rii rik rin rir ris rkc rke rkk rks rnc rni rnn rnr rns rrc rri rrk rrn rrr rrs rsc rse rsi rsk rsn rsr rss scc sce sci sck scn scr scs se- sec see sei sek sen ser ses sic sie sii sik sin sir sis sk- skc ske ski skk skr sks snc sne sni snk snn snr sns sr- src sre sri srk srn srr srs ss- ssc sse ssi ssk ssn ssr sss