The generator matrix

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

generates a code of length 18 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+148x^12+352x^14+256x^15+1518x^16+768x^17+2112x^18+768x^19+1512x^20+256x^21+352x^22+144x^24+4x^28+1x^32

The gray image is a code over GF(2) with n=72, k=13 and d=24.
This code was found by Heurico 1.16 in 0.338 seconds.