-er a-a a-c a-t aaa aac aae aag aam aar aat ac- aca acc ace acg acm acr act aea aec aee aeg aem aer aet ag- aga agc age agg agm agr agt ama amc ame amg amm amr amt ar- ara arc are arg arm arr art at- ata atc ate atg atm atr att c-- caa cac cae cag cam car cat cca ccc cce ccg ccm ccr cct ce- cea cec cee ceg cem cer cet cga cgc cge cgg cgm cgr cgt cma cmc cme cmg cmm cmr cmt cra crc cre crg crm crr crt cta ctc cte ctg ctm ctr ctt eaa eac eae eag eam ear eat ec- eca ecc ece ecg ecm ecr ect eea eec eee eeg eem eer eet ega egc ege egg egm egr egt em- ema emc eme emg emm emr emt era erc ere erg erm err ert eta etc ete etg etm etr ett gaa gac gae gag gam gar gat gca gcc gce gcg gcm gcr gct ge- gea gec gee geg gem ger get gga ggc ggg ggm ggr ggt gma gmc gme gmg gmm gmr gmt gra grc gre grg grm grr grt gta gtc gte gtg gtm gtr gtt m-r maa mac mae mag mam mar mat mc- mca mcc mce mcg mcm mcr mct mea mec mee meg mem mer met mga mgc mge mgm mgr mgt mma mmc mme mmg mmm mmr mmt mra mrc mre mrg mrm mrr mrt mta mtc mte mtg mtm mtr mtt ra- raa rac rae rag ram rar rat rca rcc rce rcg rcm rcr rct re- rea rec ree reg rem rer ret rga rgc rge rgg rgr rgt rma rmc rme rmg rmm rmr rmt rra rrc rrg rrm rrr rrt rta rtc rte rtg rtm rtr rtt taa tac tae tag tam tar tat tca tcc tce tcg tcm tcr tct te- tea tec tee teg tem ter tet tga tgc tge tgg tgm tgr tgt tma tmc tme tmg tmm tmr tmt tra trc tre trg trm trr trt tta ttc tte ttg ttm ttr ttt