The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+65x^36+188x^37+354x^38+394x^39+414x^40+484x^41+439x^42+468x^43+410x^44+294x^45+239x^46+154x^47+75x^48+56x^49+37x^50+8x^51+9x^52+2x^53+3x^54+2x^56

The gray image is a code over GF(2) with n=168, k=12 and d=72.
This code was found by Heurico 1.16 in 0.356 seconds.