-er a-a a-c a-t aaa aac aae aag aam aar aas aat ac- aca acc ace acg acm acr acs act aea aec aee aeg aem aer aes aet ag- aga agc age agg agm agr ags agt ama amc ame amg amm amr ams amt ar- ara arc are arg arm arr ars art as- asa asc ase asg asm asr ass ast at- ata atc ate atg atm atr ats att c-- caa cac cae cag cam car cas cat cca ccc cce ccg ccm ccr ccs cct ce- cea cec cee ceg cem cer ces cet cga cgc cge cgg cgm cgr cgs cgt cma cmc cme cmg cmm cmr cms cmt cra crc cre crg crm crr crs crt csa csc cse csg csm csr css cst cta ctc cte ctg ctm ctr cts ctt eaa eac eae eag eam ear eas eat ec- eca ecc ece ecg ecm ecr ecs ect eea eec eee eeg eem eer ees eet ega egc ege egg egm egr egs egt em- ema emc eme emg emm emr ems emt era erc ere erg erm err ers ert es- esa esc ese esg esm esr ess est eta etc ete etg etm etr ets ett gaa gac gae gag gam gar gas gat gca gcc gce gcg gcm gcr gcs gct ge- gea gec gee geg gem ger ges get gga ggc ggg ggm ggr ggs ggt gma gmc gme gmg gmm gmr gms gmt gra grc gre grg grm grr grs grt gsa gsc gse gsg gsm gsr gss gst gta gtc gte gtg gtm gtr gts gtt m-r maa mac mae mag mam mar mas mat mc- mca mcc mce mcg mcm mcr mcs mct mea mec mee meg mem mer mes met mga mgc mge mgm mgr mgs mgt mma mmc mme mmg mmm mmr mms mmt mra mrc mre mrg mrm mrr mrs mrt msa msc mse msg msm msr mss mst mta mtc mte mtg mtm mtr mts mtt ra- raa rac rae rag ram rar ras rat rca rcc rce rcg rcm rcr rcs rct re- rea rec ree reg rem rer res ret rga rgc rge rgg rgr rgs rgt rma rmc rme rmg rmm rmr rms rmt rra rrc rrg rrm rrr rrs rrt rsa rsc rse rsg rsm rsr rss rst rta rtc rte rtg rtm rtr rts rtt saa sac sae sag sam sar sas sat sca scc sce scg scm scr scs sct se- sea sec see seg sem ser ses set sga sgc sge sgg sgm sgr sgs sgt sma smc sme smg smm smr sms smt sr- sra src sre srg srm srr srs srt ss- ssa ssc sse ssg ssm ssr sss sst sta stc ste stg stm str sts stt taa tac tae tag tam tar tas tat tca tcc tce tcg tcm tcr tcs tct te- tea tec tee teg tem ter tes tet tga tgc tge tgg tgm tgr tgs tgt tma tmc tme tmg tmm tmr tms tmt tra trc tre trg trm trr trs trt tsa tsc tse tsg tsm tsr tss tst tta ttc tte ttg ttm ttr tts ttt