The generator matrix

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

generates a code of length 39 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+46x^28+239x^30+40x^31+582x^32+416x^33+1269x^34+1696x^35+2483x^36+3680x^37+3527x^38+4720x^39+3569x^40+3680x^41+2607x^42+1696x^43+1305x^44+416x^45+469x^46+40x^47+181x^48+75x^50+21x^52+5x^54+3x^56+1x^58+1x^60

The gray image is a code over GF(2) with n=156, k=15 and d=56.
This code was found by Heurico 1.16 in 19.4 seconds.