a-a a-c a-t aaa aac aae aap aat aav ac- aca acc ace acp act acv aea aec aee aep aet aev ap- apa apc ape app apt apv at- ata atc ate atp att atv av- ava avc ave avp avt c-- caa cac cae cap cat cav cca ccc cce ccp cct ccv ce- cea cec cee cep cet cev cpa cpc cpe cpp cpt cpv cta ctc cte ctp ctt ctv cva cvc cve cvp cvt cvv eaa eac eae eap eat eav ec- eca ecc ece ect ecv eea eec eee eep eet eev ep- epa epc epe epp ept eta etc ete etp ett etv eva evc eve evp evt evv p-p paa pac pae pap pat pav pca pcc pce pcp pct pcv pea pec pee pep pet pev ppa ppc ppe ppp ppt ppv pt- pta ptc pte ptp ptt ptv pva pvc pve pvp pvt pvv taa tac tae tap tat tav tca tcc tce tcp tct tcv te- tea tec tee tep tet tev tpa tpc tpe tpp tpt tpv tta ttc tte ttp ttt ttv tva tvc tve tvp tvt v-a v-e vaa vac vae vap vat vav vca vcc vce vcp vct vea vec vee vep vet vpa vpc vpe vpp vpt vta vtc vte vtt vtv vva vvc vvt vvv