a-a a-c a-t aaa aac aae aaf aag aan aao aas aat ac- aca acc ace acf acg acn aco acs act aea aec aee aef aeg aen aeo aes aet af- afa afc afe aff afg afn afo afs aft ag- aga agc age agf agg agn ago ags agt an- ana anc ane anf ang ann ano ans ant aoa aoc aoe aof aog aon aoo aos aot as- asa asc ase asf asg asn aso ass ast at- ata atc ate atf atg atn ato ats att c-- caa cac cae caf cag can cao cas cat cca ccc cce ccf ccg ccn cco ccs cct ce- cea cec cee cef ceg cen ceo ces cet cfa cfc cfe cff cfg cfn cfo cfs cft cga cgc cge cgg cgn cgo cgs cgt cn- cna cnc cne cnf cng cnn cno cns cnt co- coa coc coe cof cog con coo cos cot csa csc cse csf csg csn cso css cst cta ctc cte ctf ctg ctn cto cts ctt eaa eac eae eaf eag ean eao eas eat ec- eca ecc ece ecf ecg ecn eco ecs ect eea eec eee eef eeg een eeo ees eet ef- efa efc efe eff efg efo efs eft ega egc ege egf egg egn ego egs egt en- ena enc ene enf eng enn eno ens ent eo- eoa eoc eoe eof eog eon eoo eos eot es- esa esc ese esf esg esn eso ess est eta etc ete etf etg etn eto ets ett faa fac fae faf fag fan fao fas fat fca fcc fce fcf fcg fcn fco fcs fct fea fec fee fef feg fen feo fes fet ffa ffc ffe fff ffg ffn ffo ffs fft fga fgc fge fgf fgg fgn fgs fgt fna fnc fne fnf fng fnn fns fnt foa foc foe fof fog fon foo fos fot fsa fsc fse fsf fsg fsn fso fss fst fta ftc fte ftf ftg ftn fto fts ftt gaa gac gae gaf gag gan gao gas gat gca gcc gce gcf gcg gcn gco gcs gct ge- gea gec gee gef geg gen geo ges get gfa gfc gfe gff gfo gfs gft gga ggc ggg ggn ggo ggs ggt gna gnc gne gnf gnn gno gns gnt goa goc goe gof gog gon goo gos got gsa gsc gse gsf gsg gsn gso gss gst gta gtc gte gtf gtg gtn gto gts gtt naa nac nae naf nag nan nao nas nat nca ncc nce ncf ncg ncn nco ncs nct ne- nea nec nee nef neg nen neo nes net nfa nfc nfe nff nfn nfo nfs nft nga ngc nge ngf ngg ngn ngo ngs ngt nna nnc nne nnf nng nnn nno nns nnt no- noa noc noe nof nog non noo nos not nsa nsc nse nsf nsg nsn nso nss nst nta ntc nte ntf ntg ntn nto nts ntt oaa oac oae oaf oag oan oao oas oat oc- oca occ ocf ocg ocn oco ocs oct oea oec oee oef oeg oen oeo oes oet of- ofa ofc ofe off ofg ofn ofo ofs oft oga ogc oge ogf ogg ogn ogo ogs ogt on- ona onc one onf ong onn ono ons ont oo- ooa ooc oof oog oon ooo oos oot os- osa osc ose osf osg osn oso oss ost ot- ota otc ote otf otg otn oto ots ott saa sac sae saf sag san sao sas sat sca scc sce scf scg scn sco scs sct se- sea sec see sef seg sen seo ses set sfa sfc sfe sff sfg sfn sfo sfs sft sga sgc sge sgf sgg sgn sgo sgs sgt sna snc sne snf sng snn sno sns snt soa soc soe sof sog son soo sos sot ss- ssa ssc sse ssf ssg ssn sso sss sst sta stc ste stf stg stn sto sts stt taa tac tae taf tag tan tao tas tat tca tcc tce tcf tcg tcn tco tcs tct te- tea tec tee tef teg ten teo tes tet tfa tfc tfe tff tfg tfn tfo tfs tft tga tgc tge tgf tgg tgn tgo tgs tgt tna tnc tne tnf tng tnn tno tns tnt to- toa toc toe tof tog ton too tos tot tsa tsc tse tsf tsg tsn tso tss tst tta ttc tte ttf ttg ttn tto tts ttt