The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 35.

Homogenous weight enumerator: w(x)=1x^0+168x^35+463x^36+814x^37+1168x^38+1290x^39+1511x^40+1782x^41+1880x^42+1876x^43+1671x^44+1412x^45+1032x^46+650x^47+374x^48+150x^49+74x^50+40x^51+10x^52+2x^53+4x^54+8x^55+2x^56+2x^58

The gray image is a code over GF(2) with n=168, k=14 and d=70.
This code was found by Heurico 1.16 in 5.1 seconds.