The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+234x^34+296x^35+497x^36+432x^37+480x^38+388x^39+437x^40+408x^41+364x^42+200x^43+215x^44+56x^45+56x^46+12x^47+18x^48+2x^50

The gray image is a code over GF(2) with n=156, k=12 and d=68.
This code was found by Heurico 1.11 in 0.185 seconds.