-er a-a a-c a-t aaa aac aad aae aag aan aar aat ac- aca acc acd ace acg acn acr act ad- ada adc add ade adg adn adr adt aea aec aed aee aeg aen aer aet ag- aga agc agd age agg agn agr agt an- ana anc and ane ang ann anr ant ar- ara arc ard are arg arn arr art at- ata atc atd ate atg atn atr att c-- caa cac cad cae cag can car cat cca ccc ccd cce ccg ccn ccr cct cda cdc cdd cde cdg cdn cdr cdt ce- cea cec ced cee ceg cen cer cet cga cgc cgd cge cgg cgn cgr cgt cn- cna cnc cnd cne cng cnn cnr cnt cra crc crd cre crg crn crr crt cta ctc ctd cte ctg ctn ctr ctt daa dac dad dae dag dan dar dat dca dcc dcd dce dcg dcn dcr dct dda ddc ddd dde ddg ddn ddr ddt de- dea dec ded dee deg den der det dga dgc dgd dge dgg dgn dgr dgt dna dnc dnd dne dng dnn dnr dnt dra drc drd dre drg drn drr drt dta dtc dtd dte dtg dtn dtr dtt eaa eac ead eae eag ean ear eat ec- eca ecc ecd ece ecg ecn ecr ect ed- eda edc edd ede edg edn edr edt eea eec eed eee eeg een eer eet ega egc egd ege egg egn egr egt en- ena enc end ene eng enn enr ent era erc erd ere erg ern err ert eta etc etd ete etg etn etr ett g-d gaa gac gad gae gag gan gar gat gca gcc gcd gce gcg gcn gcr gct gda gdc gdd gde gdn gdr gdt ge- gea gec ged gee geg gen ger get gga ggc ggd ggg ggn ggr ggt gna gnc gnd gne gnn gnr gnt gra grc grd gre grg grn grr grt gta gtc gtd gte gtg gtn gtr gtt naa nac nad nae nag nan nar nat nca ncc ncd nce ncg ncn ncr nct nda ndc ndd nde ndg ndn ndr ndt ne- nea nec ned nee neg nen ner net nga ngc ngd nge ngg ngn ngt nna nnc nne nng nnn nnt nra nrc nrd nre nrg nrn nrr nrt nta ntc ntd nte ntg ntn ntr ntt ra- raa rac rad rae rag ran rar rat rca rcc rcd rce rcg rcn rcr rct rda rdc rdd rde rdg rdn rdr rdt re- rea rec red ree reg ren rer ret rga rgc rgd rge rgg rgn rgr rgt rna rnc rnd rng rnn rnr rnt rra rrc rrd rrg rrn rrr rrt rta rtc rtd rte rtg rtn rtr rtt taa tac tad tae tag tan tar tat tca tcc tcd tce tcg tcn tcr tct tda tdc tdd tde tdg tdn tdr tdt te- tea tec ted tee teg ten ter tet tga tgc tge tgg tgn tgr tgt tna tnc tnd tne tng tnn tnr tnt tra trc trd tre trg trn trr trt tta ttc ttd tte ttg ttn ttr ttt