-er -ic c-- ccc cce ccg cci ccr ccs cct ce- cec cee ceg cei cer ces cet cgc cge cgg cgi cgr cgs cgt ci- cic cie cig cii cir cis cit crc cre crg cri crr crs crt csc cse csg csi csr css cst ctc cte ctg cti ctr cts ctt ec- ecc ece ecg eci ecr ecs ect eec eee eeg eer ees eet egc ege egg egi egr egs egt eic eie eig eii eir eis eit erc ere erg eri err ers ert es- esc ese esg esi esr ess est etc ete etg eti etr ets ett gcc gce gcg gci gcr gcs gct ge- gec gee geg gei ger ges get ggc ggg ggi ggr ggs ggt gic gie gig gii gir gis git grc gre grg gri grr grs grt gsc gse gsg gsi gsr gss gst gtc gte gtg gti gtr gts gtt icc ice icg ici icr ics ict ie- iec iee ieg iei ier ies iet igc ige igg igi igr igs igt iic iie iii iir iis iit ir- irc ire irg iri irr irs irt is- isc ise isg isi isr iss ist itc ite itg iti its itt rcc rce rcg rci rcr rcs rct re- rec ree reg rei rer res ret rgc rge rgg rgi rgr rgs rgt ric rie rig rii rir ris rit rrc rrg rri rrr rrs rrt rsc rse rsg rsi rsr rss rst rtc rte rtg rti rtr rts rtt scc sce scg sci scr scs sct se- sec see seg sei ser ses set sgc sge sgg sgi sgr sgs sgt sic sie sig sii sir sis sit sr- src sre srg sri srr srs srt ss- ssc sse ssg ssi ssr sss sst stc ste stg sti str sts stt tcc tce tcg tci tcr tcs tct te- tec tee teg tei ter tes tet tgc tge tgg tgi tgr tgs tgt tic tie tig tii tir tis tit trc tre trg tri trr trs trt tsc tse tsg tsi tsr tss tst ttc tte ttg tti ttr tts ttt