The generator matrix

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

generates a code of length 34 over Z8 who´s minimum homogenous weight is 29.

Homogenous weight enumerator: w(x)=1x^0+148x^29+308x^30+462x^31+417x^32+626x^33+396x^34+514x^35+368x^36+320x^37+236x^38+186x^39+58x^40+42x^41+4x^42+6x^43+4x^44

The gray image is a code over GF(2) with n=136, k=12 and d=58.
This code was found by Heurico 1.11 in 0.145 seconds.