The generator matrix

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

generates a code of length 39 over Z8 who´s minimum homogenous weight is 34.

Homogenous weight enumerator: w(x)=1x^0+308x^34+76x^35+729x^36+140x^37+872x^38+104x^39+699x^40+104x^41+622x^42+76x^43+251x^44+12x^45+70x^46+16x^48+14x^50+2x^54

The gray image is a code over GF(2) with n=156, k=12 and d=68.
This code was found by Heurico 1.16 in 6.43 seconds.