a-a a-c a-t aaa aac aae aaf aag aao aat ac- aca acc ace acf acg aco act aea aec aee aef aeg aeo aet af- afa afc afe aff afg afo aft ag- aga agc age agf agg ago agt aoa aoc aoe aof aog aoo aot at- ata atc ate atf atg ato att c-- caa cac cae caf cag cao cat cca ccc cce ccf ccg cco cct ce- cea cec cee cef ceg ceo cet cfa cfc cfe cff cfg cfo cft cga cgc cge cgg cgo cgt co- coa coc coe cof cog coo cot cta ctc cte ctf ctg cto ctt eaa eac eae eaf eag eao eat ec- eca ecc ece ecf ecg eco ect eea eec eee eef eeg eeo eet ef- efa efc efe eff efg efo eft ega egc ege egf egg ego egt eo- eoa eoc eoe eof eog eoo eot eta etc ete etf etg eto ett faa fac fae faf fag fao fat fca fcc fce fcf fcg fco fct fea fec fee fef feg feo fet ffa ffc ffe fff ffg ffo fft fga fgc fge fgf fgg fgt foa foc foe fof fog foo fot fta ftc fte ftf ftg fto ftt gaa gac gae gaf gag gao gat gca gcc gce gcf gcg gco gct ge- gea gec gee gef geg geo get gfa gfc gfe gff gfo gft gga ggc ggg ggo ggt goa goc goe gof gog goo got gta gtc gte gtf gtg gto gtt oaa oac oae oaf oag oao oat oc- oca occ ocf ocg oco oct oea oec oee oef oeg oeo oet of- ofa ofc ofe off ofg ofo oft oga ogc oge ogf ogg ogo ogt oo- ooa ooc oof oog ooo oot ot- ota otc ote otf otg oto ott taa tac tae taf tag tao tat tca tcc tce tcf tcg tco tct te- tea tec tee tef teg teo tet tfa tfc tfe tff tfg tfo tft tga tgc tge tgf tgg tgo tgt to- toa toc toe tof tog too tot tta ttc tte ttf ttg tto ttt