The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+235x^40+156x^42+50x^44+28x^46+27x^48+8x^50+6x^52+1x^56

The gray image is a code over GF(2) with n=168, k=9 and d=80.
This code was found by Heurico 1.11 in 0.0338 seconds.