-er a-a a-c a-t aaa aac aad aae aag aar aat ac- aca acc acd ace acg acr act ad- ada adc add ade adg adr adt aea aec aed aee aeg aer aet ag- aga agc agd age agg agr agt ar- ara arc ard are arg arr art at- ata atc atd ate atg atr att c-- caa cac cad cae cag car cat cca ccc ccd cce ccg ccr cct cda cdc cdd cde cdg cdr cdt ce- cea cec ced cee ceg cer cet cga cgc cgd cge cgg cgr cgt cra crc crd cre crg crr crt cta ctc ctd cte ctg ctr ctt daa dac dad dae dag dar dat dca dcc dcd dce dcg dcr dct dda ddc ddd dde ddg ddr ddt de- dea dec ded dee deg der det dga dgc dgd dge dgg dgr dgt dra drc drd dre drg drr drt dta dtc dtd dte dtg dtr dtt eaa eac ead eae eag ear eat ec- eca ecc ecd ece ecg ecr ect ed- eda edc edd ede edg edr edt eea eec eed eee eeg eer eet ega egc egd ege egg egr egt era erc erd ere erg err ert eta etc etd ete etg etr ett g-d gaa gac gad gae gag gar gat gca gcc gcd gce gcg gcr gct gda gdc gdd gde gdr gdt ge- gea gec ged gee geg ger get gga ggc ggd ggg ggr ggt gra grc grd gre grg grr grt gta gtc gtd gte gtg gtr gtt ra- raa rac rad rae rag rar rat rca rcc rcd rce rcg rcr rct rda rdc rdd rde rdg rdr rdt re- rea rec red ree reg rer ret rga rgc rgd rge rgg rgr rgt rra rrc rrd rrg rrr rrt rta rtc rtd rte rtg rtr rtt taa tac tad tae tag tar tat tca tcc tcd tce tcg tcr tct tda tdc tdd tde tdg tdr tdt te- tea tec ted tee teg ter tet tga tgc tge tgg tgr tgt tra trc trd tre trg trr trt tta ttc ttd tte ttg ttr ttt