The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+180x^29+298x^30+420x^31+405x^32+572x^33+437x^34+598x^35+393x^36+324x^37+176x^38+168x^39+64x^40+28x^41+13x^42+14x^43+1x^44+4x^46

The gray image is a code over GF(2) with n=136, k=12 and d=58.
This code was found by Heurico 1.16 in 5.15 seconds.