The generator matrix

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

generates a code of length 43 over Z8 who´s minimum homogenous weight is 38.

Homogenous weight enumerator: w(x)=1x^0+328x^38+180x^39+632x^40+236x^41+664x^42+244x^43+604x^44+200x^45+460x^46+108x^47+261x^48+44x^49+80x^50+12x^51+36x^52+4x^54+2x^56

The gray image is a code over GF(2) with n=172, k=12 and d=76.
This code was found by Heurico 1.11 in 1.93 seconds.