The generator matrix

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

generates a code of length 92 over Z8 who´s minimum homogenous weight is 86.

Homogenous weight enumerator: w(x)=1x^0+330x^86+184x^87+626x^88+244x^89+562x^90+156x^91+418x^92+144x^93+408x^94+128x^95+285x^96+72x^97+186x^98+44x^99+106x^100+16x^101+66x^102+24x^103+52x^104+4x^105+16x^106+14x^108+8x^111+2x^116

The gray image is a code over GF(2) with n=368, k=12 and d=172.
This code was found by Heurico 1.16 in 16.3 seconds.