The generator matrix

 1  0  1  1  1  0  1  1  0  1  1  6  2  1  1  1  6  1  4  1  1  0  1  1  0  1  4  0  1  4  2  1  1  0  1  1  4  1  1
 0  1  1  0  1  1  3  0  1  4  1  1  1  2  5  6  1  3  1  0  7  1  0  5  1  3  4  1  6  1  6  5  0  1  7  4  1  3  0
 0  0  2  0  0  0  0  6  6  0  4  2  2  2  2  6  4  4  4  4  2  6  6  2  0  2  4  4  0  6  0  4  6  4  2  4  4  2  0
 0  0  0  2  0  6  2  6  6  0  6  2  0  4  0  0  6  4  0  2  2  4  2  6  0  4  2  0  2  0  2  4  4  4  4  0  2  4  4
 0  0  0  0  2  0  2  6  6  2  0  4  0  4  6  2  2  4  6  6  2  6  4  4  6  2  4  0  2  0  6  6  6  6  0  2  4  2  4
 0  0  0  0  0  4  0  0  0  0  0  4  4  4  0  0  4  0  0  4  4  0  4  0  4  0  4  0  0  4  0  0  4  0  4  0  4  4  0
 0  0  0  0  0  0  4  0  0  0  4  4  4  4  4  0  0  4  0  4  4  4  0  4  4  0  4  4  0  0  4  4  0  0  0  0  0  0  0
 0  0  0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  0  0  4  4  0  4  0  0  4
 0  0  0  0  0  0  0  0  4  4  4  4  4  0  4  0  0  0  4  4  4  0  0  0  0  4  4  0  4  0  0  4  4  4  4  4  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+63x^28+116x^29+259x^30+426x^31+744x^32+1220x^33+2103x^34+3344x^35+5013x^36+6860x^37+8176x^38+8786x^39+8143x^40+6868x^41+5138x^42+3492x^43+2197x^44+1192x^45+615x^46+306x^47+199x^48+120x^49+87x^50+28x^51+23x^52+8x^53+6x^54+2x^55+1x^56

The gray image is a code over GF(2) with n=156, k=16 and d=56.
This code was found by Heurico 1.16 in 75.2 seconds.