The generator matrix

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

generates a code of length 36 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+21x^28+32x^29+103x^30+74x^31+351x^32+154x^33+655x^34+258x^35+825x^36+242x^37+676x^38+158x^39+310x^40+78x^41+84x^42+22x^43+25x^44+6x^45+13x^46+2x^48+5x^50+1x^52

The gray image is a code over GF(2) with n=144, k=12 and d=56.
This code was found by Heurico 1.16 in 0.32 seconds.