The generator matrix

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

generates a code of length 78 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+97x^66+436x^67+1178x^68+1600x^69+2722x^70+3744x^71+4966x^72+6254x^73+8104x^74+8836x^75+10649x^76+10600x^77+12025x^78+10948x^79+10621x^80+9426x^81+8579x^82+6360x^83+5006x^84+3340x^85+2367x^86+1272x^87+896x^88+482x^89+235x^90+136x^91+115x^92+36x^93+14x^94+12x^95+8x^96+6x^97+1x^98

The gray image is a code over GF(2) with n=312, k=17 and d=132.
This code was found by Heurico 1.11 in 269 seconds.