-er -ic c-- ccc cce cci ccl ccr ccs cct ce- cec cee cei cel cer ces cet ci- cic cie cii cil cir cis cit cl- clc cle cli cll clr cls clt crc cre cri crl crr crs crt csc cse csi csl csr css cst ctc cte cti ctl ctr cts ctt ec- ecc ece eci ecl ecr ecs ect eec eee eel eer ees eet eic eie eii eil eir eis eit elc ele eli ell elr els elt erc ere eri erl err ers ert es- esc ese esi esl esr ess est etc ete eti etl etr ets ett icc ice ici icl icr ics ict ie- iec iee iei iel ier ies iet iic iie iii iil iir iis iit il- ilc ile ili ill ilr ils ilt ir- irc ire iri irl irr irs irt is- isc ise isi isl isr iss ist itc ite iti itl its itt lcc lce lci lcl lcr lcs lct lec lee lei lel ler les let lic lie lii lil lir lis lit llc lle lli lll llr lls llt lrc lri lrr lrs lrt lsc lse lsi lsl lsr lss lst ltc lte lti ltl ltr lts ltt rcc rce rci rcl rcr rcs rct re- rec ree rei rel rer res ret ric rie rii ril rir ris rit rlc rle rli rll rlr rls rlt rrc rri rrl rrr rrs rrt rsc rse rsi rsl rsr rss rst rtc rte rti rtl rtr rts rtt scc sce sci scl scr scs sct se- sec see sei sel ser ses set sic sie sii sil sir sis sit slc sle sli sll slr sls slt sr- src sre sri srl srr srs srt ss- ssc sse ssi ssl ssr sss sst stc ste sti stl str sts stt tcc tce tci tcl tcr tcs tct te- tec tee tei tel ter tes tet tic tie tii til tir tis tit tlc tle tli tll tlr tls tlt trc tre tri trl trr trs trt tsc tse tsi tsl tsr tss tst ttc tte tti ttl ttr tts ttt