-er -ic c-- ccc cce cci cck ccn ccp ccr ccs ce- cec cee cei cek cen cep cer ces ci- cic cie cii cik cin cip cir cis ckc cki cks cn- cnc cne cni cnn cnp cnr cns cpc cpe cpi cpk cpn cpp cpr cps crc cre cri crk crn crp crr crs csc cse csi csk csn csp csr css ec- ecc ece eci eck ecn ecr ecs eec eee eek een eep eer ees eic eie eii eik ein eip eir eis ekc eke eki ekp ekr eks en- enc ene eni enk enn enp enr ens ep- epc epe epi epn epp epr eps erc ere eri erk ern erp err ers es- esc ese esi esk esn esp esr ess icc ice ici ick icn icp icr ics ie- iec iee iei iek ien iep ier ies iic iie iii iin iip iir iis ikc ike iki ikk ikr iks in- inc ine ini ink inn inp inr ins ipc ipe ipi ipn ipp ipr ips ir- irc ire iri irk irn irp irr irs is- isc ise isi isk isn isp isr iss kcc kce kci kck kcn kcp kcr kcs ke- kec kee kei kek ken kep ker kes kic kie kii kik kin kip kir kis kkc kke kki kkk kkn kkp kkr kks kn- knc kne kni knk knn knp knr kpc kpe kpi kpk kpn kpp kpr kps krc kri krk krn krp krr krs ksc kse ksi ksk ksn ksp ksr kss n-i ncc nce nci nck ncn ncp ncr ncs ne- nec nee nei nek nen nep ner nes nic nie nii nik nin nip nir nis nkc nke nki nkk nkn nkp nkr nks nnc nne nni nnk nnn nnp nns npc npe npi npn npp npr nps nrc nre nri nrk nrn nrp nrr nrs nsc nse nsi nsk nsn nsp nsr nss p-p pcc pce pci pck pcn pcp pcr pcs pec pee pei pek pen pep per pes pic pie pii pik pin pip pir pis pkc pke pki pkn pkp pkr pks pn- pnc pne pni pnk pnn pnp pnr pns ppc ppe ppi ppk ppn ppp ppr pps prc pre pri prk prn prp prr prs ps- psc pse psi psk psn psp psr pss rcc rce rci rcn rcp rcr rcs re- rec ree rei rek ren rep rer res ric rie rii rik rin rip rir ris rkc rke rkk rkp rks rnc rni rnn rnp rnr rns rpc rpe rpi rpk rpn rpp rpr rps rrc rri rrk rrn rrp rrr rrs rsc rse rsi rsk rsn rsp rsr rss scc sce sci sck scn scp scr scs se- sec see sei sek sen sep ser ses sic sie sii sik sin sip sir sis sk- skc ske ski skk skp skr sks snc sne sni snk snn snp snr sns spc spe spi spk spn spp spr sps sr- src sre sri srk srn srp srr srs ss- ssc sse ssi ssk ssn ssp ssr sss