The generator matrix

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

generates a code of length 24 over Z8 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+141x^18+317x^20+64x^21+592x^22+448x^23+988x^24+448x^25+588x^26+64x^27+299x^28+116x^30+26x^32+3x^34+1x^40

The gray image is a code over GF(2) with n=96, k=12 and d=36.
This code was found by Heurico 1.16 in 1.23 seconds.