The generator matrix

 1  0  0  0  1  1  1  1  4  1  1  1  2  0  0  1  0  6  1  6  1  4  1  1  1  4  2  1  2  1  4  2  6  1  2  1
 0  1  0  0  0  1  1  7  1  3  4  0  1  1  6  1  4  1  7  1  6  1  3  6  4  0  1  7  2  2  1  1  6  3  1  0
 0  0  1  0  1  1  0  4  3  5  5  6  3  4  1  6  1  3  6  6  3  5  7  2  7  0  0  1  2  4  7  1  1  6  3  3
 0  0  0  1  1  0  1  6  3  3  2  1  0  5  1  4  6  5  5  6  4  6  5  2  3  1  1  4  1  2  3  0  1  4  7  4
 0  0  0  0  2  0  0  0  2  6  4  6  6  6  4  6  6  0  2  0  2  0  2  2  4  2  2  6  0  4  2  0  4  6  2  0
 0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  4  0  4  4
 0  0  0  0  0  0  4  0  0  0  0  0  4  0  4  4  4  0  4  4  0  4  0  0  4  4  4  0  4  0  4  4  4  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+306x^28+580x^29+1438x^30+2140x^31+3997x^32+4644x^33+6978x^34+7824x^35+9166x^36+7988x^37+7460x^38+5200x^39+3856x^40+1820x^41+1212x^42+448x^43+318x^44+72x^45+62x^46+4x^47+18x^48+2x^50+2x^52

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 62.6 seconds.