-er -ic c-- ccc cce ccg cci ccl ccr ccs ce- cec cee ceg cei cel cer ces cgc cge cgg cgi cgl cgr cgs ci- cic cie cig cii cil cir cis cl- clc cle clg cli cll clr cls crc cre crg cri crl crr crs csc cse csg csi csl csr css ec- ecc ece ecg eci ecl ecr ecs eec eee eeg eel eer ees egc ege egg egi egl egr egs eic eie eig eii eil eir eis elc ele elg eli ell elr els erc ere erg eri erl err ers es- esc ese esg esi esl esr ess gcc gce gcg gci gcl gcr gcs ge- gec gee geg gei gel ger ges ggc ggg ggi ggr ggs gic gie gig gii gil gir gis glc gle glg gli gll glr gls grc gre grg gri grl grr grs gsc gse gsg gsi gsl gsr gss icc ice icg ici icl icr ics ie- iec iee ieg iei iel ier ies igc ige igg igi igl igr igs iic iie iii iil iir iis il- ilc ile ilg ili ill ilr ils ir- irc ire irg iri irl irr irs is- isc ise isg isi isl isr iss lcc lce lcg lci lcl lcr lcs lec lee leg lei lel ler les lgc lge lgg lgi lgl lgr lgs lic lie lig lii lil lir lis llc lle llg lli lll llr lls lrc lrg lri lrr lrs lsc lse lsg lsi lsl lsr lss rcc rce rcg rci rcl rcr rcs re- rec ree reg rei rel rer res rgc rge rgg rgi rgr rgs ric rie rig rii ril rir ris rlc rle rlg rli rll rlr rls rrc rrg rri rrl rrr rrs rsc rse rsg rsi rsl rsr rss scc sce scg sci scl scr scs se- sec see seg sei sel ser ses sgc sge sgg sgi sgl sgr sgs sic sie sig sii sil sir sis slc sle slg sli sll slr sls sr- src sre srg sri srl srr srs ss- ssc sse ssg ssi ssl ssr sss