The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+352x^28+540x^29+1414x^30+2048x^31+3924x^32+4952x^33+7096x^34+7576x^35+9090x^36+8176x^37+7412x^38+5016x^39+3851x^40+1896x^41+1304x^42+456x^43+300x^44+52x^45+54x^46+8x^47+15x^48+2x^52+1x^56

The gray image is a code over GF(2) with n=144, k=16 and d=56.
This code was found by Heurico 1.16 in 55.3 seconds.