-ey a-a a-c a-t aaa aac aae aag aan aao aat aax aay ac- aca acc ace acg acn aco act acx acy aea aec aee aeg aen aeo aet aex aey ag- aga agc age agg agn ago agt agx agy an- ana anc ane ang ann ano ant anx any aoa aoc aoe aog aon aoo aot aox at- ata atc ate atg atn ato att atx ax- axa axe axn axo axt axx ay- aya ayc aye ayn ayo ayt ayx c-- caa cac cae cag can cao cat cax cay cca ccc cce ccg ccn cco cct ccx ce- cea cec cee ceg cen ceo cet cex cey cga cgc cge cgg cgn cgo cgt cgy cn- cna cnc cne cng cnn cno cnt cnx cny co- coa coc coe cog con coo cot cox coy cta ctc cte ctg ctn cto ctt ctx cty cxc cxo cxt cxx cya cyc cye cyg cyn cyo cyt eaa eac eae eag ean eao eat eax ec- eca ecc ece ecg ecn eco ect ecx eea eec eee eeg een eeo eet eex eey ega egc ege egg egn ego egt egx egy en- ena enc ene eng enn eno ent eny eo- eoa eoc eoe eog eon eoo eot eta etc ete etg etn eto ett etx ety ex- exa exc exe exo ext exx exy eya eyc eye eyn eyo eyt gaa gac gae gag gan gao gat gay gca gcc gce gcg gcn gco gct ge- gea gec gee geg gen geo get gex gey gga ggc ggg ggn ggo ggt gna gnc gne gnn gno gnt goa goc goe gog gon goo got gox goy gta gtc gte gtg gtn gto gtt gtx gty gxa gxt gy- gya gye gyn gyo naa nac nae nag nan nao nat nax nay nca ncc nce ncg ncn nco nct ncx ne- nea nec nee neg nen neo net nex ney nga ngc nge ngg ngn ngo ngt nna nnc nne nng nnn nno nnt no- noa noc noe nog non noo not nox noy nta ntc nte ntg ntn nto ntt ntx nxc nxt nya nyc nye nyg nyn nyo nyt nyx nyy oaa oac oae oag oan oao oat oax oc- oca occ ocg ocn oco oct ocx oea oec oee oeg oen oeo oet oex oey oga ogc oge ogg ogn ogo ogt ogx ogy on- ona onc one ong onn ono ont onx ony oo- ooa ooc oog oon ooo oot oox ot- ota otc ote otg otn oto ott ox- oxa oxc oxn oxo oxt oxx oxy oya oye oyo t-x taa tac tae tag tan tao tat tax tay tca tcc tce tcg tcn tco tct tcx te- tea tec tee teg ten teo tet tex tey tga tgc tge tgg tgn tgo tgt tgy tna tnc tne tng tnn tno tnt tnx to- toa toc toe tog ton too tot tox toy tta ttc tte ttg ttn tto ttt ttx tty txe txn txt tya tyc tye tyg tyn tyo tyt xaa xac xag xan xat xcx xee xeg xen xet xex xge xna xnc xno xoa xoc xog xon xoo xot xox xtc xtx xty xxo xxx xxy xyy yaa yac yae yag yan yao yat yax yay yca ycc yce yco ycy yea yec yee yeg yen yeo yet yex yey yga ygc ygo yna yne yng ynn yny yoc yoe yog yon yoo yot yox yoy yta ytc yte ytn yto ytt yxa yxe yxy yyc yye yyg yyt yyy