-er a-a a-c a-t aaa aac aae aag aan aar aas aat ac- aca acc ace acg acn acr acs act aea aec aee aeg aen aer aes aet ag- aga agc age agg agn agr ags agt an- ana anc ane ang ann anr ans ant ar- ara arc are arg arn arr ars art as- asa asc ase asg asn asr ass ast at- ata atc ate atg atn atr ats att c-- caa cac cae cag can car cas cat cca ccc cce ccg ccn ccr ccs cct ce- cea cec cee ceg cen cer ces cet cga cgc cge cgg cgn cgr cgs cgt cn- cna cnc cne cng cnn cnr cns cnt cra crc cre crg crn crr crs crt csa csc cse csg csn csr css cst cta ctc cte ctg ctn ctr cts ctt eaa eac eae eag ean ear eas eat ec- eca ecc ece ecg ecn ecr ecs ect eea eec eee eeg een eer ees eet ega egc ege egg egn egr egs egt en- ena enc ene eng enn enr ens ent era erc ere erg ern err ers ert es- esa esc ese esg esn esr ess est eta etc ete etg etn etr ets ett gaa gac gae gag gan gar gas gat gca gcc gce gcg gcn gcr gcs gct ge- gea gec gee geg gen ger ges get gga ggc ggg ggn ggr ggs ggt gna gnc gne gnn gnr gns gnt gra grc gre grg grn grr grs grt gsa gsc gse gsg gsn gsr gss gst gta gtc gte gtg gtn gtr gts gtt naa nac nae nag nan nar nas nat nca ncc nce ncg ncn ncr ncs nct ne- nea nec nee neg nen ner nes net nga ngc nge ngg ngn ngs ngt nna nnc nne nng nnn nns nnt nra nrc nre nrg nrn nrr nrs nrt nsa nsc nse nsg nsn nsr nss nst nta ntc nte ntg ntn ntr nts ntt ra- raa rac rae rag ran rar ras rat rca rcc rce rcg rcn rcr rcs rct re- rea rec ree reg ren rer res ret rga rgc rge rgg rgn rgr rgs rgt rna rnc rng rnn rnr rns rnt rra rrc rrg rrn rrr rrs rrt rsa rsc rse rsg rsn rsr rss rst rta rtc rte rtg rtn rtr rts rtt saa sac sae sag san sar sas sat sca scc sce scg scn scr scs sct se- sea sec see seg sen ser ses set sga sgc sge sgg sgn sgr sgs sgt sna snc sne sng snn snr sns snt sr- sra src sre srg srn srr srs srt ss- ssa ssc sse ssg ssn ssr sss sst sta stc ste stg stn str sts stt taa tac tae tag tan tar tas tat tca tcc tce tcg tcn tcr tcs tct te- tea tec tee teg ten ter tes tet tga tgc tge tgg tgn tgr tgs tgt tna tnc tne tng tnn tnr tns tnt tra trc tre trg trn trr trs trt tsa tsc tse tsg tsn tsr tss tst tta ttc tte ttg ttn ttr tts ttt