a-a a-c a-t aaa aac aad aae aat aav aax ac- aca acc acd ace act acv acx ad- ada adc add ade adt adv adx aea aec aed aee aet aev aex at- ata atc atd ate att atv atx av- ava avc avd ave avt avx ax- axa axe axt axv axx c-- caa cac cad cae cat cav cax cca ccc ccd cce cct ccv ccx cda cdc cdd cde cdt cdv cdx ce- cea cec ced cee cet cev cex cta ctc ctd cte ctt ctv ctx cva cvc cvd cve cvt cvv cvx cxc cxt cxv cxx daa dac dad dae dat dav dax dca dcc dcd dce dct dcv dcx dda ddc ddd dde ddt ddx de- dea dec ded dee det dev dex dta dtc dtd dte dtt dtv dtx dva dvc dvd dve dvt dvx dxc dxd dxt dxx eaa eac ead eae eat eav eax ec- eca ecc ecd ece ect ecv ecx ed- eda edc edd ede edt edx eea eec eed eee eet eev eex eta etc etd ete ett etv etx eva evc evd eve evt evv ex- exa exc exd exe ext exx t-x taa tac tad tae tat tav tax tca tcc tcd tce tct tcv tcx tda tdc tdd tde tdt tdv tdx te- tea tec ted tee tet tev tex tta ttc ttd tte ttt ttv ttx tva tvc tvd tve tvt tvx txe txt v-a v-e vaa vac vad vae vat vav vax vca vcc vcd vce vct vcx vdc vdd vde vdt vdv vdx vea vec ved vee vet vex vta vtc vte vtt vtv vtx vva vvc vvt vvv vxa vxd vxv xaa xac xad xat xav xcd xcv xcx xda xdc xde xdt xdv xed xee xet xev xex xtc xtv xtx xvt xxv xxx