-er -ic c-- ccc cce cci ccn ccr ccs ce- cec cee cei cen cer ces ci- cic cie cii cin cir cis cn- cnc cne cni cnn cnr cns crc cre cri crn crr crs csc cse csi csn csr css ec- ecc ece eci ecn ecr ecs eec eee een eer ees eic eie eii ein eir eis en- enc ene eni enn enr ens erc ere eri ern err ers es- esc ese esi esn esr ess icc ice ici icn icr ics ie- iec iee iei ien ier ies iic iie iii iin iir iis in- inc ine ini inn inr ins ir- irc ire iri irn irr irs is- isc ise isi isn isr iss n-i ncc nce nci ncn ncr ncs ne- nec nee nei nen ner nes nic nie nii nin nir nis nnc nne nni nnn nns nrc nre nri nrn nrr nrs nsc nse nsi nsn nsr nss rcc rce rci rcn rcr rcs re- rec ree rei ren rer res ric rie rii rin rir ris rnc rni rnn rnr rns rrc rri rrn rrr rrs rsc rse rsi rsn rsr rss scc sce sci scn scr scs se- sec see sei sen ser ses sic sie sii sin sir sis snc sne sni snn snr sns sr- src sre sri srn srr srs ss- ssc sse ssi ssn ssr sss