The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  0  2  0  2  2  2  2  4  4  1  1  1  1  2  2  1  2  0  4  4  1  0  0  2  4
 0  2  0  6  4  6  4  2  0  6  0  6  4  2  4  2  6  2  6  2  0  4  2  2  2  2  0  4  0  4  0  4  6  6  2  0  4  2  4  0  2  2
 0  0  4  4  4  0  0  4  0  0  4  4  4  4  0  0  0  4  4  0  4  4  4  0  4  0  0  0  4  4  0  0  0  0  4  4  4  0  4  4  0  4

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

Homogenous weight enumerator: w(x)=1x^0+54x^42+4x^44+3x^48+2x^50

The gray image is a code over GF(2) with n=168, k=6 and d=84.
This code was found by Heurico 1.16 in 0.0229 seconds.