a-a a-c a-t aaa aac aad aae aao aat ac- aca acc acd ace aco act ad- ada adc add ade ado adt aea aec aed aee aeo aet aoa aoc aod aoe aoo aot at- ata atc atd ate ato att c-- caa cac cad cae cao cat cca ccc ccd cce cco cct cda cdc cdd cde cdo cdt ce- cea cec ced cee ceo cet co- coa coc cod coe coo cot cta ctc ctd cte cto ctt daa dac dad dae dao dat dca dcc dcd dce dco dct dda ddc ddd dde ddo ddt de- dea dec ded dee deo det doa doc dod doe doo dot dta dtc dtd dte dto dtt eaa eac ead eae eao eat ec- eca ecc ecd ece eco ect ed- eda edc edd ede edo edt eea eec eed eee eeo eet eo- eoa eoc eod eoe eoo eot eta etc etd ete eto ett oaa oac oad oae oao oat oc- oca occ ocd oco oct oda odc odd ode odo odt oea oec oed oee oeo oet oo- ooa ooc ood ooo oot ot- ota otc otd ote oto ott taa tac tad tae tao tat tca tcc tcd tce tco tct tda tdc tdd tde tdo tdt te- tea tec ted tee teo tet to- toa toc tod toe too tot tta ttc ttd tte tto ttt