-er -ic c-- ccc cce cci ccl ccr ccs ce- cec cee cei cel cer ces ci- cic cie cii cil cir cis cl- clc cle cli cll clr cls crc cre cri crl crr crs csc cse csi csl csr css ec- ecc ece eci ecl ecr ecs eec eee eel eer ees eic eie eii eil eir eis elc ele eli ell elr els erc ere eri erl err ers es- esc ese esi esl esr ess icc ice ici icl icr ics ie- iec iee iei iel ier ies iic iie iii iil iir iis il- ilc ile ili ill ilr ils ir- irc ire iri irl irr irs is- isc ise isi isl isr iss lcc lce lci lcl lcr lcs lec lee lei lel ler les lic lie lii lil lir lis llc lle lli lll llr lls lrc lri lrr lrs lsc lse lsi lsl lsr lss rcc rce rci rcl rcr rcs re- rec ree rei rel rer res ric rie rii ril rir ris rlc rle rli rll rlr rls rrc rri rrl rrr rrs rsc rse rsi rsl rsr rss scc sce sci scl scr scs se- sec see sei sel ser ses sic sie sii sil sir sis slc sle sli sll slr sls sr- src sre sri srl srr srs ss- ssc sse ssi ssl ssr sss