a-a a-c a-t aaa aac aae aan aao aat ac- aca acc ace acn aco act aea aec aee aen aeo aet an- ana anc ane ann ano ant aoa aoc aoe aon aoo aot at- ata atc ate atn ato att c-- caa cac cae can cao cat cca ccc cce ccn cco cct ce- cea cec cee cen ceo cet cn- cna cnc cne cnn cno cnt co- coa coc coe con coo cot cta ctc cte ctn cto ctt eaa eac eae ean eao eat ec- eca ecc ece ecn eco ect eea eec eee een eeo eet en- ena enc ene enn eno ent eo- eoa eoc eoe eon eoo eot eta etc ete etn eto ett naa nac nae nan nao nat nca ncc nce ncn nco nct ne- nea nec nee nen neo net nna nnc nne nnn nno nnt no- noa noc noe non noo not nta ntc nte ntn nto ntt oaa oac oae oan oao oat oc- oca occ ocn oco oct oea oec oee oen oeo oet on- ona onc one onn ono ont oo- ooa ooc oon ooo oot ot- ota otc ote otn oto ott taa tac tae tan tao tat tca tcc tce tcn tco tct te- tea tec tee ten teo tet tna tnc tne tnn tno tnt to- toa toc toe ton too tot tta ttc tte ttn tto ttt