-er -ic c-- ccc cce cci ccl ccp ccr ccs ce- cec cee cei cel cep cer ces ci- cic cie cii cil cip cir cis cl- clc cle cli cll clp clr cls cpc cpe cpi cpl cpp cpr cps crc cre cri crl crp crr crs csc cse csi csl csp csr css ec- ecc ece eci ecl ecr ecs eec eee eel eep eer ees eic eie eii eil eip eir eis elc ele eli ell elp elr els ep- epc epe epi epl epp epr eps erc ere eri erl erp err ers es- esc ese esi esl esp esr ess icc ice ici icl icp icr ics ie- iec iee iei iel iep ier ies iic iie iii iil iip iir iis il- ilc ile ili ill ilp ilr ils ipc ipe ipi ipl ipp ipr ips ir- irc ire iri irl irp irr irs is- isc ise isi isl isp isr iss l-p lcc lce lci lcl lcp lcr lcs lec lee lei lel lep ler les lic lie lii lil lip lir lis llc lle lli lll llp llr lls lpc lpe lpi lpl lpp lpr lps lrc lri lrp lrr lrs lsc lse lsi lsl lsp lsr lss p-p pcc pce pci pcl pcp pcr pcs pec pee pei pel pep per pes pic pie pii pil pip pir pis plc ple pli pll plp plr pls ppc ppe ppi ppl ppp ppr pps prc pre pri prl prp prr prs ps- psc pse psi psl psp psr pss rcc rce rci rcl rcp rcr rcs re- rec ree rei rel rep rer res ric rie rii ril rip rir ris rlc rle rli rll rlp rlr rls rpc rpe rpi rpl rpp rpr rps rrc rri rrl rrp rrr rrs rsc rse rsi rsl rsp rsr rss scc sce sci scl scp scr scs se- sec see sei sel sep ser ses sic sie sii sil sip sir sis slc sle sli sll slp slr sls spc spe spi spl spp spr sps sr- src sre sri srl srp srr srs ss- ssc sse ssi ssl ssp ssr sss