The generator matrix

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

generates a code of length 38 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+92x^28+100x^29+244x^30+414x^31+772x^32+1116x^33+1641x^34+2530x^35+3324x^36+3914x^37+4283x^38+4098x^39+3222x^40+2706x^41+1766x^42+1058x^43+705x^44+346x^45+222x^46+88x^47+69x^48+10x^49+33x^50+4x^51+6x^52+3x^54+1x^60

The gray image is a code over GF(2) with n=152, k=15 and d=56.
This code was found by Heurico 1.16 in 19.9 seconds.