The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  2  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 2a^2  1  1  1 2a^2  1  1  1  1  1  1  1  1  1  1  1  2  1  1  1  2  1  1  1  1  1 2a  1 2a^2  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1  a 3a^2+2 2a^2+3a+1 a^2+3a a^2+3a+3 3a^2+2a+3  a 3a^2+2 a^2+3a  1  0 2a^2+3a+1 3a^2+2a+3 2a^2+3 a^2+3a+3 3a^2+2a+3  a  1 a^2+3a  0 3a^2+2 a^2+3a+3 2a^2+3a+3 3a^2+2a+2 2a^2+3  2 2a^2+3a+1  1 2a^2+3a+3  2 a+2 a^2+a 3a^2+2a+2 2a a^2+3a+1 3a+1 a+2 3a^2+3 a^2+a+3  2 3a^2+2a+2 3a^2+2a 2a^2+2a+2 2a^2+3a 2a^2+3a+3 2a^2+3 3a+2 3a^2+3a+1  1 a+2 3a^2+3 a^2+2a  1  0 2a^2+3a+3 a^2+a+2 2a^2+2a+3 a^2+a  3 2a^2+3a+1 3a^2+2a+3 3a^2+a+2 3a^2+3a+3 3a  1 2a^2+2a+1 a^2+a+2 a+1  1 3a^2+1 3a^2+3a+1 a^2+3 2a+3 a^2+3a  1 a^2+3a+2  1 2a^2+2a+3 3a^2+2 2a^2+2a 3a^2 3a^2+3 3a^2+2a+2 a^2+3a+1 2a^2+1 3a^2+a+1 2a+2 a+3 2a a^2+1 3a+1 2a a^2+2a+3 a^2+3a+3 3a^2+a 2a^2+3
 0  0 2a^2+2  0  2  2 2a+2  2 2a^2 2a+2 2a^2+2 2a^2  2 2a^2+2a 2a^2+2a+2  0 2a^2+2  2 2a^2+2a+2 2a 2a 2a^2+2a 2a+2  2 2a^2+2a+2 2a^2+2 2a^2+2a+2 2a^2+2a+2 2a^2+2a  2 2a^2+2a 2a^2+2a 2a^2+2a+2 2a^2+2a 2a 2a^2 2a 2a^2+2a 2a^2+2  0 2a^2 2a^2+2a  2  0 2a^2+2a+2 2a+2 2a^2  2  0  2 2a^2 2a^2+2  0 2a^2+2 2a+2 2a^2 2a^2+2 2a^2 2a^2+2  2 2a 2a+2 2a^2+2a+2  0 2a^2+2a+2 2a 2a^2+2a  2 2a 2a 2a+2  0 2a+2  0 2a+2  2 2a^2+2a+2 2a 2a+2  2 2a^2+2a 2a 2a^2+2 2a+2 2a^2+2a 2a^2+2a  2  0 2a^2+2a+2  0 2a^2+2a 2a^2+2a+2  2 2a 2a^2+2a+2 2a  0  0  2
 0  0  0  2 2a^2+2 2a^2+2a+2 2a+2 2a^2 2a^2+2a+2 2a^2+2 2a^2+2 2a^2+2 2a^2+2a+2 2a+2 2a+2 2a^2 2a^2 2a 2a^2  2  0 2a^2+2a 2a  2 2a 2a^2+2a 2a^2+2  2  0 2a 2a^2+2  2 2a^2+2a 2a+2 2a^2+2a  2 2a 2a^2+2a+2 2a+2 2a^2+2 2a^2+2a 2a^2+2 2a^2+2a+2 2a^2 2a^2+2a+2 2a^2+2a+2 2a^2+2a+2 2a^2+2 2a^2+2a  0 2a^2 2a^2+2a+2 2a+2 2a 2a 2a^2 2a+2 2a+2  2 2a^2+2a 2a^2+2a+2  2  0 2a^2+2a+2 2a+2 2a^2+2a  0 2a 2a+2 2a^2  0 2a 2a^2+2a+2 2a^2+2a 2a^2+2a 2a+2 2a^2+2a 2a+2 2a^2 2a^2+2a 2a^2+2a 2a^2+2a+2 2a^2+2 2a^2 2a 2a^2  0 2a+2 2a^2+2a 2a^2+2 2a 2a^2+2a+2 2a^2+2a+2 2a+2 2a^2+2 2a^2+2 2a+2  0  0

generates a code of length 99 over GR(64,4) who´s minimum homogenous weight is 664.

Homogenous weight enumerator: w(x)=1x^0+329x^664+56x^665+112x^666+392x^670+616x^671+7070x^672+1624x^673+2296x^674+2912x^678+3808x^679+18214x^680+4256x^681+4424x^682+5040x^686+5040x^687+33558x^688+6496x^689+6776x^690+11872x^694+11872x^695+53942x^696+10472x^697+10024x^698+8456x^702+7336x^703+33446x^704+5768x^705+5040x^706+259x^712+154x^720+133x^728+126x^736+70x^744+28x^752+56x^760+49x^768+21x^776

The gray image is a code over GF(8) with n=792, k=6 and d=664.
This code was found by Heurico 1.16 in 24.6 seconds.