The generator matrix

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

generates a code of length 34 over Z8 who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+284x^30+544x^32+534x^34+367x^36+228x^38+71x^40+6x^42+9x^44+4x^46

The gray image is a code over GF(2) with n=136, k=11 and d=60.
This code was found by Heurico 1.16 in 1.99 seconds.