-er -ic c-- ccc cce cci ccn ccp ccr ccs ce- cec cee cei cen cep cer ces ci- cic cie cii cin cip cir cis cn- cnc cne cni cnn cnp cnr cns cpc cpe cpi cpn cpp cpr cps crc cre cri crn crp crr crs csc cse csi csn csp csr css ec- ecc ece eci ecn ecr ecs eec eee een eep eer ees eic eie eii ein eip eir eis en- enc ene eni enn enp enr ens ep- epc epe epi epn epp epr eps erc ere eri ern erp err ers es- esc ese esi esn esp esr ess icc ice ici icn icp icr ics ie- iec iee iei ien iep ier ies iic iie iii iin iip iir iis in- inc ine ini inn inp inr ins ipc ipe ipi ipn ipp ipr ips ir- irc ire iri irn irp irr irs is- isc ise isi isn isp isr iss n-i ncc nce nci ncn ncp ncr ncs ne- nec nee nei nen nep ner nes nic nie nii nin nip nir nis nnc nne nni nnn nnp nns npc npe npi npn npp npr nps nrc nre nri nrn nrp nrr nrs nsc nse nsi nsn nsp nsr nss p-p pcc pce pci pcn pcp pcr pcs pec pee pei pen pep per pes pic pie pii pin pip pir pis pn- pnc pne pni pnn pnp pnr pns ppc ppe ppi ppn ppp ppr pps prc pre pri prn prp prr prs ps- psc pse psi psn psp psr pss rcc rce rci rcn rcp rcr rcs re- rec ree rei ren rep rer res ric rie rii rin rip rir ris rnc rni rnn rnp rnr rns rpc rpe rpi rpn rpp rpr rps rrc rri rrn rrp rrr rrs rsc rse rsi rsn rsp rsr rss scc sce sci scn scp scr scs se- sec see sei sen sep ser ses sic sie sii sin sip sir sis snc sne sni snn snp snr sns spc spe spi spn spp spr sps sr- src sre sri srn srp srr srs ss- ssc sse ssi ssn ssp ssr sss