The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  2  2  1  1  2  2  1  2  1  1  2  2  1  1  1  2  1  1  1  1  4  1  1  2  1  4  1  1  4  2  4  4  1  1  2  1  1  1
 0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  0  0  0  4  4  4  0  4  4  0  0  4  0  0  4  4  0  0  4  0  0  4  4  4  0  4  4  4  0  0  0  4  4  4  0  4  0  4  4  0  0  0  0  4  4  4  4  4  4  4  0  0  4  0  0  0  0
 0  0  4  0  0  0  0  0  0  0  0  0  4  0  0  4  4  4  4  4  4  0  0  0  0  0  0  0  0  4  0  4  4  4  4  4  4  4  0  4  4  4  4  0  4  4  0  4  4  4  4  4  4  0  4  0  0  0  0  4  0  4  4  4  0  4  0  4  4  0  0  0  4  4  0  4  4  0  0
 0  0  0  4  0  0  0  0  0  0  0  0  4  4  4  4  4  0  4  4  4  4  0  0  4  4  4  4  4  4  0  4  0  4  4  0  4  0  0  0  4  4  0  0  0  0  0  0  0  0  0  4  4  0  0  4  4  4  4  4  0  0  0  4  4  0  4  0  0  4  0  0  0  4  4  0  0  0  0
 0  0  0  0  4  0  0  0  0  0  0  4  0  4  4  0  4  4  4  0  4  0  4  0  4  0  0  4  0  4  0  0  0  0  0  4  4  0  0  4  0  0  4  4  4  4  4  4  4  4  0  4  0  4  4  0  0  0  0  0  4  0  4  4  4  0  4  4  0  0  0  0  0  4  4  4  4  4  0
 0  0  0  0  0  4  0  0  0  0  0  4  0  0  4  4  4  4  4  0  0  4  4  0  0  0  4  0  0  0  4  4  0  4  4  0  4  4  4  0  4  0  0  0  0  4  0  0  4  0  4  0  4  4  0  0  0  4  4  0  4  4  0  4  0  4  0  0  0  0  4  0  0  0  4  4  4  4  4
 0  0  0  0  0  0  4  0  0  0  4  0  0  0  4  4  0  0  4  0  0  4  4  0  4  4  4  0  4  4  4  0  0  0  0  4  4  0  4  4  4  4  4  0  4  4  4  0  4  4  4  4  4  0  0  4  4  0  4  0  0  0  0  4  0  0  4  4  4  4  4  4  0  4  0  4  0  4  4
 0  0  0  0  0  0  0  4  0  0  4  0  0  4  0  0  4  0  0  4  0  4  4  4  0  4  0  4  4  4  0  4  4  0  4  0  0  4  0  0  4  0  4  0  4  0  4  4  4  4  0  4  4  4  4  4  0  0  0  0  4  4  4  4  0  4  4  0  0  0  0  0  4  0  4  0  4  4  0
 0  0  0  0  0  0  0  0  4  0  4  4  4  4  0  0  0  0  4  0  0  0  0  4  4  0  0  4  4  0  4  0  4  0  0  4  0  0  4  0  0  4  4  4  0  0  4  4  0  4  0  4  4  4  0  4  0  0  4  4  0  4  0  0  4  0  0  4  4  4  0  0  0  4  0  0  0  4  0
 0  0  0  0  0  0  0  0  0  4  4  4  4  0  0  4  4  4  4  4  0  4  4  4  4  0  4  0  4  4  4  0  4  0  4  0  4  0  0  4  0  0  4  4  4  0  0  4  0  0  4  0  4  4  4  0  4  4  4  0  0  4  4  4  4  4  4  4  0  4  0  0  0  4  4  4  0  4  4

generates a code of length 79 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+37x^66+84x^68+12x^69+87x^70+44x^71+89x^72+70x^73+165x^74+110x^75+401x^76+184x^77+716x^78+200x^79+714x^80+156x^81+381x^82+124x^83+122x^84+76x^85+62x^86+28x^87+57x^88+14x^89+46x^90+6x^91+45x^92+28x^94+19x^96+10x^98+4x^100+3x^102+1x^122

The gray image is a code over GF(2) with n=316, k=12 and d=132.
This code was found by Heurico 1.16 in 1.99 seconds.