a-a a-c a-t aaa aac aaf aag aan aao aar aat ac- aca acc acf acg acn aco acr act af- afa afc aff afg afn afo afr aft ag- aga agc agf agg agn ago agr agt an- ana anc anf ang ann ano anr ant aoa aoc aof aog aon aoo aor aot ar- ara arc arf arg arn aro arr art at- ata atc atf atg atn ato atr att c-- caa cac caf cag can cao car cat cca ccc ccf ccg ccn cco ccr cct cfa cfc cff cfg cfn cfo cfr cft cga cgc cgg cgn cgo cgr cgt cn- cna cnc cnf cng cnn cno cnr cnt co- coa coc cof cog con coo cor cot cra crc crf crg crn cro crr crt cta ctc ctf ctg ctn cto ctr ctt faa fac faf fag fan fao far fat fca fcc fcf fcg fcn fco fcr fct ffa ffc fff ffg ffn ffo ffr fft fga fgc fgf fgg fgn fgr fgt fna fnc fnf fng fnn fnr fnt foa foc fof fog fon foo for fot fra frc frf frg frn fro frr frt fta ftc ftf ftg ftn fto ftr ftt gaa gac gaf gag gan gao gar gat gca gcc gcf gcg gcn gco gcr gct gfa gfc gff gfo gfr gft gga ggc ggg ggn ggo ggr ggt gna gnc gnf gnn gno gnr gnt goa goc gof gog gon goo gor got gra grc grf grg grn gro grr grt gta gtc gtf gtg gtn gto gtr gtt naa nac naf nag nan nao nar nat nca ncc ncf ncg ncn nco ncr nct nfa nfc nff nfn nfo nfr nft nga ngc ngf ngg ngn ngo ngt nna nnc nnf nng nnn nno nnt no- noa noc nof nog non noo nor not nra nrc nrf nrg nrn nro nrr nrt nta ntc ntf ntg ntn nto ntr ntt oaa oac oaf oag oan oao oar oat oc- oca occ ocf ocg ocn oco ocr oct of- ofa ofc off ofg ofn ofo ofr oft oga ogc ogf ogg ogn ogo ogt on- ona onc onf ong onn ono onr ont oo- ooa ooc oof oog oon ooo oor oot or- ora orc orf org orn oro orr ort ot- ota otc otf otg otn oto otr ott ra- raa rac raf rag ran rao rar rat rca rcc rcf rcg rcn rco rcr rct rfa rfc rff rfg rfn rfo rfr rft rga rgc rgf rgg rgn rgo rgr rgt rna rnc rng rnn rno rnr rnt roa roc rof rog ron roo ror rot rra rrc rrf rrg rrn rrr rrt rta rtc rtf rtg rtn rto rtr rtt taa tac taf tag tan tao tar tat tca tcc tcf tcg tcn tco tcr tct tfa tfc tff tfg tfn tfo tfr tft tga tgc tgf tgg tgn tgo tgr tgt tna tnc tnf tng tnn tno tnr tnt to- toa toc tof tog ton too tor tot tra trc trf trg trn tro trr trt tta ttc ttf ttg ttn tto ttr ttt