-th a-a a-c a-t aaa aac aae aag aah aan aas aat aax ac- aca acc ace acg ach acn acs act acx aea aec aee aeg aeh aen aes aet aex ag- aga agc age agg agh agn ags agt agx aha ahc ahe ahg ahh ahn ahs aht ahx an- ana anc ane ang anh ann ans ant anx as- asa asc ase asg ash asn ass ast asx at- ata atc ate atg ath atn ats att atx ax- axa axe axh axn axs axt axx c-- caa cac cae cag cah can cas cat cax cca ccc cce ccg cch ccn ccs cct ccx ce- cea cec cee ceg ceh cen ces cet cex cga cgc cge cgg cgh cgn cgs cgt ch- cha chc che chg chh chn chs cht chx cn- cna cnc cne cng cnh cnn cns cnt cnx csa csc cse csg csh csn css cst csx cta ctc cte ctg cth ctn cts ctt ctx cxc cxh cxs cxt cxx eaa eac eae eag eah ean eas eat eax ec- eca ecc ece ecg ech ecn ecs ect ecx eea eec eee eeg een ees eet eex ega egc ege egg egh egn egs egt egx eha ehc ehe ehg ehh ehn ehs eht en- ena enc ene eng enh enn ens ent es- esa esc ese esg esh esn ess est esx eta etc ete etg eth etn ets ett etx ex- exa exc exe exh exs ext exx gaa gac gae gag gah gan gas gat gca gcc gce gcg gch gcn gcs gct ge- gea gec gee geg geh gen ges get gex gga ggc ggg ggh ggn ggs ggt gha ghc ghe ghg ghh ghn ghs ght gna gnc gne gnn gns gnt gsa gsc gse gsg gsn gss gst gsx gta gtc gte gtg gth gtn gts gtt gtx gxa gxs gxt haa hac hae hag hah han has hat hax hca hcc hce hcg hch hcn hcs hct he- hea hec hee heg heh hen hes het hex hga hgc hge hgg hgh hgn hgs hgt hha hhc hhe hhg hhh hhn hhs hht hna hnc hne hng hnh hnn hns hnt hsa hsc hse hsg hsh hsn hss hst hsx hta htc hte htg hth htn hts htt htx hxc naa nac nae nag nah nan nas nat nax nca ncc nce ncg nch ncn ncs nct ncx ne- nea nec nee neg neh nen nes net nex nga ngc nge ngg ngh ngn ngs ngt nha nhc nhe nhg nhh nhn nhs nht nna nnc nne nng nnh nnn nns nnt nsa nsc nse nsg nsh nsn nss nst nsx nta ntc nte ntg nth ntn nts ntt ntx nxc nxt saa sac sae sag sah san sas sat sax sca scc sce scg sch scn scs sct scx se- sea sec see seg seh sen ses set sex sga sgc sge sgg sgh sgn sgs sgt sgx sh- sha shc she shg shh shn shs sht sna snc sne sng snn sns snt ss- ssa ssc sse ssg ssh ssn sss sst ssx sta stc ste stg sth stn sts stt stx sxc sxn sxs sxt t-x taa tac tae tag tah tan tas tat tax tca tcc tce tcg tch tcn tcs tct tcx te- tea tec tee teg teh ten tes tet tex tga tgc tge tgg tgh tgn tgs tgt th- tha thc the thg thh thn ths tht thx tna tnc tne tng tnh tnn tns tnt tnx tsa tsc tse tsg tsh tsn tss tst tsx tta ttc tte ttg tth ttn tts ttt ttx txe txn txs txt xaa xac xag xan xas xat xch xcx xee xeg xen xes xet xex xge xht xna xnc xns xsa xsc xss xst xtc xts xtx xxx