The generator matrix

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

generates a code of length 93 over GR(64,4) who´s minimum homogenous weight is 632.

Homogenous weight enumerator: w(x)=1x^0+4767x^632+5712x^633+672x^634+1008x^635+1400x^636+4480x^637+3080x^638+2184x^639+18529x^640+14784x^641+2968x^642+3304x^643+3584x^644+8288x^645+4872x^646+3640x^647+21133x^648+18480x^649+4592x^650+4704x^651+4760x^652+10304x^653+5656x^654+2296x^655+23891x^656+21280x^657+6104x^658+5320x^659+4592x^660+9184x^661+4312x^662+2632x^663+18095x^664+11424x^665+28x^672+28x^680+28x^688+21x^696+7x^704

The gray image is a code over GF(8) with n=744, k=6 and d=632.
This code was found by Heurico 1.16 in 20.2 seconds.