The generator matrix

 1  1  1  1  1  1  1  1  1  2  2  2  1  2  1  2  4  1
 0  2  0  0  0  2  6  2  0  4  2  2  4  0  2  6  2  6
 0  0  2  0  2  2  6  0  0  0  6  0  4  2  4  6  6  4
 0  0  0  2  2  0  6  2  0  2  4  6  6  2  4  2  0  6
 0  0  0  0  4  0  0  0  4  0  4  4  0  0  0  0  4  4
 0  0  0  0  0  4  0  0  4  4  4  4  0  4  4  0  4  0
 0  0  0  0  0  0  4  0  0  0  0  4  4  0  0  4  4  4
 0  0  0  0  0  0  0  4  4  4  4  4  4  0  4  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+219x^12+16x^13+434x^14+464x^15+848x^16+1568x^17+1042x^18+1568x^19+944x^20+464x^21+422x^22+16x^23+158x^24+22x^26+5x^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 85.5 seconds.