The generator matrix

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

generates a code of length 41 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+92x^28+38x^30+8x^31+370x^32+96x^33+348x^34+552x^35+1374x^36+1792x^37+2250x^38+3536x^39+3807x^40+4416x^41+3384x^42+3536x^43+2702x^44+1792x^45+1034x^46+552x^47+655x^48+96x^49+108x^50+8x^51+178x^52+6x^54+29x^56+6x^60+2x^64

The gray image is a code over GF(2) with n=164, k=15 and d=56.
This code was found by Heurico 1.16 in 19.5 seconds.