-er a-a a-c a-t aaa aac aae aag aan aao aar aat ac- aca acc ace acg acn aco acr act aea aec aee aeg aen aeo aer aet ag- aga agc age agg agn ago agr agt an- ana anc ane ang ann ano anr ant aoa aoc aoe aog aon aoo aor aot ar- ara arc are arg arn aro arr art at- ata atc ate atg atn ato atr att c-- caa cac cae cag can cao car cat cca ccc cce ccg ccn cco ccr cct ce- cea cec cee ceg cen ceo cer cet cga cgc cge cgg cgn cgo cgr cgt cn- cna cnc cne cng cnn cno cnr cnt co- coa coc coe cog con coo cor cot cra crc cre crg crn cro crr crt cta ctc cte ctg ctn cto ctr ctt eaa eac eae eag ean eao ear eat ec- eca ecc ece ecg ecn eco ecr ect eea eec eee eeg een eeo eer eet ega egc ege egg egn ego egr egt en- ena enc ene eng enn eno enr ent eo- eoa eoc eoe eog eon eoo eor eot era erc ere erg ern ero err ert eta etc ete etg etn eto etr ett gaa gac gae gag gan gao gar gat gca gcc gce gcg gcn gco gcr gct ge- gea gec gee geg gen geo ger get gga ggc ggg ggn ggo ggr ggt gna gnc gne gnn gno gnr gnt goa goc goe gog gon goo gor got gra grc gre grg grn gro grr grt gta gtc gte gtg gtn gto gtr gtt naa nac nae nag nan nao nar nat nca ncc nce ncg ncn nco ncr nct ne- nea nec nee neg nen neo ner net nga ngc nge ngg ngn ngo ngt nna nnc nne nng nnn nno nnt no- noa noc noe nog non noo nor not nra nrc nre nrg nrn nro nrr nrt nta ntc nte ntg ntn nto ntr ntt oaa oac oae oag oan oao oar oat oc- oca occ ocg ocn oco ocr oct oea oec oee oeg oen oeo oer oet oga ogc oge ogg ogn ogo ogt on- ona onc one ong onn ono onr ont oo- ooa ooc oog oon ooo oor oot or- ora orc ore org orn oro orr ort ot- ota otc ote otg otn oto otr ott ra- raa rac rae rag ran rao rar rat rca rcc rce rcg rcn rco rcr rct re- rea rec ree reg ren reo rer ret rga rgc rge rgg rgn rgo rgr rgt rna rnc rng rnn rno rnr rnt roa roc roe rog ron roo ror rot rra rrc rrg rrn rrr rrt rta rtc rte rtg rtn rto rtr rtt taa tac tae tag tan tao tar tat tca tcc tce tcg tcn tco tcr tct te- tea tec tee teg ten teo ter tet tga tgc tge tgg tgn tgo tgr tgt tna tnc tne tng tnn tno tnr tnt to- toa toc toe tog ton too tor tot tra trc tre trg trn tro trr trt tta ttc tte ttg ttn tto ttr ttt