The generator matrix

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

generates a code of length 40 over Z8 who´s minimum homogenous weight is 31.

Homogenous weight enumerator: w(x)=1x^0+92x^31+369x^32+852x^33+1486x^34+2340x^35+3724x^36+5302x^37+6575x^38+7684x^39+8323x^40+8014x^41+6791x^42+5244x^43+3807x^44+2370x^45+1314x^46+688x^47+279x^48+166x^49+87x^50+16x^51+9x^52+2x^54+1x^62

The gray image is a code over GF(2) with n=160, k=16 and d=62.
This code was found by Heurico 1.16 in 66.9 seconds.