-er -ic c-- ccc ccd cce ccg cci ccr ccs cct cdc cdd cde cdg cdi cdr cds cdt ce- cec ced cee ceg cei cer ces cet cgc cgd cge cgg cgi cgr cgs cgt ci- cic cid cie cig cii cir cis cit crc crd cre crg cri crr crs crt csc csd cse csg csi csr css cst ctc ctd cte ctg cti ctr cts ctt dcc dcd dce dcg dci dcr dcs dct ddc ddd dde ddg ddi ddr dds ddt de- dec ded dee deg dei der des det dgc dgd dge dgg dgi dgr dgs dgt di- dic did die dig dii dir dis dit drc drd dre drg dri drr drs drt dsc dsd dse dsg dsi dsr dss dst dtc dtd dte dtg dti dtr dts dtt ec- ecc ecd ece ecg eci ecr ecs ect ed- edc edd ede edg edi edr eds edt eec eed eee eeg eer ees eet egc egd ege egg egi egr egs egt eic eid eie eig eii eir eis eit erc erd ere erg eri err ers ert es- esc esd ese esg esi esr ess est etc etd ete etg eti etr ets ett g-d gcc gcd gce gcg gci gcr gcs gct gdc gdd gde gdi gdr gds gdt ge- gec ged gee geg gei ger ges get ggc ggd ggg ggi ggr ggs ggt gic gid gie gig gii gir gis git grc grd gre grg gri grr grs grt gsc gsd gse gsg gsi gsr gss gst gtc gtd gte gtg gti gtr gts gtt i-d icc icd ice icg ici icr ics ict idc idd ide idg idi idr ids idt ie- iec ied iee ieg iei ier ies iet igc igd ige igg igi igr igs igt iic iid iie iii iir iis iit ir- irc ird ire irg iri irr irs irt is- isc isd ise isg isi isr iss ist itc itd ite itg iti its itt rcc rcd rce rcg rci rcr rcs rct rdc rdd rde rdg rdi rdr rds rdt re- rec red ree reg rei rer res ret rgc rgd rge rgg rgi rgr rgs rgt ric rid rie rig rii rir ris rit rrc rrd rrg rri rrr rrs rrt rsc rsd rse rsg rsi rsr rss rst rtc rtd rte rtg rti rtr rts rtt scc scd sce scg sci scr scs sct sdc sdd sde sdg sdi sdr sds sdt se- sec sed see seg sei ser ses set sgc sgd sge sgg sgi sgr sgs sgt sic sid sie sig sii sir sis sit sr- src srd sre srg sri srr srs srt ss- ssc ssd sse ssg ssi ssr sss sst stc std ste stg sti str sts stt tcc tcd tce tcg tci tcr tcs tct tdc tdd tde tdg tdi tdr tds tdt te- tec ted tee teg tei ter tes tet tgc tge tgg tgi tgr tgs tgt tic tid tie tig tii tir tis tit trc trd tre trg tri trr trs trt tsc tsd tse tsg tsi tsr tss tst ttc ttd tte ttg tti ttr tts ttt