The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  2  2  2  2  2  1  1  2  0  2  1  2  1  1  1  2  2  0  2  2
 0  2  0  0  0  0  0  0  0  2  2  6  6  6  2  2  4  4  6  2  0  6  6  6  4  4  0  0  6  2  4  0  6  2  0  2  4  0
 0  0  2  0  0  0  2  6  2  2  2  4  2  6  0  0  4  6  6  0  6  6  0  2  6  0  4  6  6  0  4  4  6  4  6  0  6  2
 0  0  0  2  0  2  2  6  0  0  2  2  0  2  2  4  4  6  2  2  0  4  6  4  4  6  2  2  6  4  6  4  4  6  6  0  0  6
 0  0  0  0  2  2  0  6  2  0  2  2  2  4  4  6  2  0  4  4  0  6  2  2  6  2  4  2  6  2  0  0  6  2  0  0  2  0
 0  0  0  0  0  4  0  0  0  4  4  0  4  4  4  4  4  4  4  4  4  0  4  4  4  0  0  4  0  0  4  0  0  4  4  0  4  0
 0  0  0  0  0  0  4  0  0  0  0  0  4  0  0  0  4  4  4  0  4  0  4  4  0  0  0  4  4  4  0  4  4  4  0  0  4  4
 0  0  0  0  0  0  0  4  0  4  0  4  0  0  4  4  0  0  0  4  4  4  0  4  0  4  4  4  0  0  4  4  4  4  4  4  0  0
 0  0  0  0  0  0  0  0  4  0  0  0  0  4  0  0  4  0  4  4  4  4  4  4  4  4  0  0  4  0  0  4  0  0  0  4  4  4

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

Homogenous weight enumerator: w(x)=1x^0+253x^28+12x^29+742x^30+84x^31+1591x^32+452x^33+2580x^34+1344x^35+4514x^36+2216x^37+5162x^38+2184x^39+4419x^40+1336x^41+2892x^42+480x^43+1562x^44+76x^45+606x^46+4x^47+179x^48+4x^49+48x^50+22x^52+2x^54+1x^56+1x^60+1x^64

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 30.8 seconds.