The generator matrix

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

generates a code of length 24 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+136x^12+647x^16+384x^18+2552x^20+7808x^22+9712x^24+7808x^26+2552x^28+384x^30+647x^32+136x^36+1x^48

The gray image is a code over GF(2) with n=96, k=15 and d=24.
This code was found by Heurico 1.16 in 4.27 seconds.