The generator matrix

 1  0  0  1  1  1  6  4  1  1  2  1  1  6  1  1  6  2  1  0  1  4  1  1  1  2  0  1  1  1  1  6  6  1  1  0  1  1  1  1  2  2  1  1  1  1  1  1  1  0  1  6  6  6  1  1  1  1  2  4  1  1  0  0  2  1  1  1  0  2  1
 0  1  0  0  1  1  1  1  6  3  1  2  7  0  5  4  1  1  1  6  2  1  2  3  6  2  1  7  0  7  7  1  6  0  5  1  3  4  2  5  0  1  4  1  1  5  6  2  2  0  2  1  1  1  5  3  3  0  2  1  2  6  1  6  1  5  6  2  1  6  4
 0  0  1  3  3  0  3  7  3  0  2  6  1  1  5  2  4  5  2  1  1  1  3  7  4  1  6  2  1  5  0  0  1  6  2  3  7  3  6  0  1  3  2  2  4  3  7  6  4  1  0  3  1  1  6  4  0  6  1  7  5  7  2  1  7  0  0  3  0  1  4
 0  0  0  4  0  0  4  0  0  4  4  0  4  4  0  4  4  0  0  0  0  4  4  0  4  4  4  4  0  4  0  4  4  0  0  4  4  4  0  4  0  0  0  4  0  0  0  4  4  4  0  0  4  4  4  4  4  4  4  4  0  4  0  0  0  0  4  0  4  4  0
 0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  4  4  0  4  4  4  0  4  0  0  4  4  0  4  4  0  4  0  4  4  4  0  4  0  4  0  0  4  0  0  4  4  4  4  0  4  4  0
 0  0  0  0  0  4  4  0  4  0  4  4  0  4  4  4  0  4  0  4  0  0  4  4  4  0  4  0  4  4  0  0  4  0  4  4  0  4  4  4  4  0  4  0  4  0  0  0  0  4  0  0  4  0  0  4  4  4  0  0  0  0  4  0  4  0  0  0  4  0  4

generates a code of length 71 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+40x^64+230x^65+219x^66+444x^67+279x^68+520x^69+268x^70+386x^71+288x^72+420x^73+207x^74+232x^75+119x^76+180x^77+50x^78+84x^79+34x^80+54x^81+18x^82+4x^83+6x^84+4x^85+5x^86+2x^87+1x^88+1x^94

The gray image is a code over GF(2) with n=284, k=12 and d=128.
This code was found by Heurico 1.16 in 0.74 seconds.