a-a a-t aaa aag aao aap aat ag- aga agg ago agp agt aoa aog aoo aop aot ap- apa apg apo app apt at- ata atg ato atp att g-p gaa gag gao gap gat gga ggg ggo ggp ggt goa gog goo gop got gpa gpg gpo gpp gpt gta gtg gto gtp gtt oaa oag oao oap oat oga ogg ogo ogp ogt oo- ooa oog ooo oop oot op- opa opg opo opp opt ot- ota otg oto otp ott p-p paa pag pao pap pat pga pgg pgo pgp pgt poa pog poo pop pot ppa ppg ppo ppp ppt pt- pta ptg pto ptp ptt taa tag tao tap tat tga tgg tgo tgp tgt to- toa tog too top tot tpa tpg tpo tpp tpt tta ttg tto ttp ttt