-er -ic c-- ccc cce ccg cci cco ccr ccs cct ce- cec cee ceg cei ceo cer ces cet cgc cge cgg cgi cgo cgr cgs cgt ci- cic cie cig cii cio cir cis cit co- coc coe cog coi coo cor cos cot crc cre crg cri cro crr crs crt csc cse csg csi cso csr css cst ctc cte ctg cti cto ctr cts ctt ec- ecc ece ecg eci eco ecr ecs ect eec eee eeg eeo eer ees eet egc ege egg egi ego egr egs egt eic eie eig eii eio eir eis eit eo- eoc eoe eog eoi eoo eor eos eot erc ere erg eri ero err ers ert es- esc ese esg esi eso esr ess est etc ete etg eti eto etr ets ett gcc gce gcg gci gco gcr gcs gct ge- gec gee geg gei geo ger ges get ggc ggg ggi ggo ggr ggs ggt gic gie gig gii gio gir gis git goc goe gog goi goo gor gos got grc gre grg gri gro grr grs grt gsc gse gsg gsi gso gsr gss gst gtc gte gtg gti gto gtr gts gtt icc ice icg ici ico icr ics ict ie- iec iee ieg iei ier ies iet igc ige igg igi igo igr igs igt iic iie iii iio iir iis iit io- ioc ioe iog ioi ioo ior ios iot ir- irc ire irg iri iro irr irs irt is- isc ise isg isi iso isr iss ist itc ite itg iti ito its itt o-i oc- occ ocg oci oco ocr ocs oct oec oee oeg oei oeo oer oes oet ogc oge ogg ogi ogo ogs ogt oic oie oii oio oir ois oit oo- ooc oog ooi ooo oor oos oot or- orc ore org ori oro orr ors ort os- osc ose osg osi oso osr oss ost ot- otc ote otg oti oto otr ots ott rcc rce rcg rci rco rcr rcs rct re- rec ree reg rei reo rer res ret rgc rge rgg rgi rgo rgr rgs rgt ric rie rig rii rio rir ris rit roc roe rog roi roo ror ros rot rrc rrg rri rrr rrs rrt rsc rse rsg rsi rso rsr rss rst rtc rte rtg rti rto rtr rts rtt scc sce scg sci sco scr scs sct se- sec see seg sei seo ser ses set sgc sge sgg sgi sgo sgr sgs sgt sic sie sig sii sio sir sis sit soc soe sog soi soo sor sos sot sr- src sre srg sri sro srr srs srt ss- ssc sse ssg ssi sso ssr sss sst stc ste stg sti sto str sts stt tcc tce tcg tci tco tcr tcs tct te- tec tee teg tei teo ter tes tet tgc tge tgg tgi tgo tgr tgs tgt tic tie tig tii tio tir tis tit to- toc toe tog toi too tor tos tot trc tre trg tri tro trr trs trt tsc tse tsg tsi tso tsr tss tst ttc tte ttg tti tto ttr tts ttt