-th a-a a-c a-t aaa aac aae aag aah aan aao aat aax ac- aca acc ace acg ach acn aco act acx aea aec aee aeg aeh aen aeo aet aex ag- aga agc age agg agh agn ago agt agx aha ahc ahe ahg ahh ahn aho aht ahx an- ana anc ane ang anh ann ano ant anx aoa aoc aoe aog aoh aon aoo aot aox at- ata atc ate atg ath atn ato att atx ax- axa axe axh axn axo axt axx c-- caa cac cae cag cah can cao cat cax cca ccc cce ccg cch ccn cco cct ccx ce- cea cec cee ceg ceh cen ceo cet cex cga cgc cge cgg cgh cgn cgo cgt ch- cha chc che chg chh chn cho cht chx cn- cna cnc cne cng cnh cnn cno cnt cnx co- coa coc coe cog coh con coo cot cox cta ctc cte ctg cth ctn cto ctt ctx cxc cxh cxo cxt cxx eaa eac eae eag eah ean eao eat eax ec- eca ecc ece ecg ech ecn eco ect ecx eea eec eee eeg een eeo eet eex ega egc ege egg egh egn ego egt egx eha ehc ehe ehg ehh ehn eho eht en- ena enc ene eng enh enn eno ent eo- eoa eoc eoe eog eoh eon eoo eot eta etc ete etg eth etn eto ett etx ex- exa exc exe exh exo ext exx gaa gac gae gag gah gan gao gat gca gcc gce gcg gch gcn gco gct ge- gea gec gee geg geh gen geo get gex gga ggc ggg ggh ggn ggo ggt gha ghc ghe ghg ghh ghn gho ght gna gnc gne gnn gno gnt goa goc goe gog goh gon goo got gox gta gtc gte gtg gth gtn gto gtt gtx gxa gxt haa hac hae hag hah han hao hat hax hca hcc hce hcg hch hcn hco hct he- hea hec hee heg heh hen heo het hex hga hgc hge hgg hgh hgn hgo hgt hha hhc hhe hhg hhh hhn hho hht hna hnc hne hng hnh hnn hno hnt hoa hoc hoe hog hoh hon hoo hot hox hta htc hte htg hth htn hto htt htx hxc naa nac nae nag nah nan nao nat nax nca ncc nce ncg nch ncn nco nct ncx ne- nea nec nee neg neh nen neo net nex nga ngc nge ngg ngh ngn ngo ngt nha nhc nhe nhg nhh nhn nht nna nnc nne nng nnh nnn nno nnt no- noa noc noe nog noh non noo not nox nta ntc nte ntg nth ntn nto ntt ntx nxc nxt oaa oac oae oag oah oan oao oat oax oc- oca occ ocg och ocn oco oct ocx oea oec oee oeg oeh oen oeo oet oex oga ogc oge ogg ogh ogn ogo ogt ogx oha ohc ohe ohg ohh ohn oho oht on- ona onc one ong onh onn ono ont onx oo- ooa ooc oog ooh oon ooo oot oox ot- ota otc ote otg oth otn oto ott ox- oxa oxc oxn oxo oxt oxx t-x taa tac tae tag tah tan tao tat tax tca tcc tce tcg tch tcn tco tct tcx te- tea tec tee teg teh ten teo tet tex tga tgc tge tgg tgh tgn tgo tgt th- tha thc the thg thh thn tho tht thx tna tnc tne tng tnh tnn tno tnt tnx to- toa toc toe tog toh ton too tot tox tta ttc tte ttg tth ttn tto ttt ttx txe txn txt xaa xac xag xan xat xch xcx xee xeg xen xet xex xge xht xna xnc xno xoa xoc xog xon xoo xot xox xtc xtx xxo xxx