-er -ic c-- ccc cce ccg cci cck ccr ccs cct ce- cec cee ceg cei cek cer ces cet cgc cge cgg cgi cgr cgs cgt ci- cic cie cig cii cik cir cis cit ckc cki cks ckt crc cre crg cri crk crr crs crt csc cse csg csi csk csr css cst ctc cte ctg cti ctk ctr cts ctt ec- ecc ece ecg eci eck ecr ecs ect eec eee eeg eek eer ees eet egc ege egg egi egr egs egt eic eie eig eii eik eir eis eit ekc eke ekg eki ekr eks ekt erc ere erg eri erk err ers ert es- esc ese esg esi esk esr ess est etc ete etg eti etk etr ets ett gcc gce gcg gci gck gcr gcs gct ge- gec gee geg gei gek ger ges get ggc ggg ggi ggr ggs ggt gic gie gig gii gik gir gis git gks gkt grc gre grg gri grk grr grs grt gsc gse gsg gsi gsk gsr gss gst gtc gte gtg gti gtk gtr gts gtt icc ice icg ici ick icr ics ict ie- iec iee ieg iei iek ier ies iet igc ige igg igi igk igr igs igt iic iie iii iir iis iit ikc ike iki ikk ikr iks ikt ir- irc ire irg iri irk irr irs irt is- isc ise isg isi isk isr iss ist itc ite itg iti itk its itt k-t kcc kce kcg kci kck kcr kcs kct ke- kec kee keg kei kek ker kes ket kgc kgi kgs kic kie kig kii kik kir kis kit kkc kke kki kkk kkr kks kkt krc krg kri krk krr krs krt ksc kse ksg ksi ksk ksr kss kst ktc kte ktg ktk ktr kts ktt rcc rce rcg rci rcr rcs rct re- rec ree reg rei rek rer res ret rgc rge rgg rgi rgk rgr rgs rgt ric rie rig rii rik rir ris rit rkc rke rkg rkk rks rkt rrc rrg rri rrk rrr rrs rrt rsc rse rsg rsi rsk rsr rss rst rtc rte rtg rti rtk rtr rts rtt scc sce scg sci sck scr scs sct se- sec see seg sei sek ser ses set sgc sge sgg sgi sgk sgr sgs sgt sic sie sig sii sik sir sis sit sk- skc ske skg ski skk skr sks skt sr- src sre srg sri srk srr srs srt ss- ssc sse ssg ssi ssk ssr sss sst stc ste stg sti stk str sts stt tcc tce tcg tci tck tcr tcs tct te- tec tee teg tei tek ter tes tet tgc tge tgg tgi tgk tgr tgs tgt tic tie tig tii tik tir tis tit tkc tke tkg tkk tkr tks tkt trc tre trg tri trk trr trs trt tsc tse tsg tsi tsk tsr tss tst ttc tte ttg tti ttk ttr tts ttt