The generator matrix

 1  0  1  1  1  0  1  1  0  1  1  2  4  1  1  1  1  1
 0  1  1  0  1  1  0  3  1  0  4  1  1  7  7  4  6  4
 0  0  2  0  0  0  0  0  0  6  4  2  6  4  6  4  2  0
 0  0  0  2  0  0  6  4  6  2  4  4  2  6  6  6  4  0
 0  0  0  0  2  6  6  4  2  4  6  0  2  0  2  0  2  2
 0  0  0  0  0  4  4  4  4  0  4  4  0  0  4  4  0  0

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

Homogenous weight enumerator: w(x)=1x^0+70x^12+132x^13+146x^14+624x^15+668x^16+1796x^17+1272x^18+1824x^19+721x^20+620x^21+138x^22+112x^23+43x^24+12x^25+12x^26+1x^28

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 0.38 seconds.