The generator matrix

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

generates a code of length 18 over Z8 who´s minimum homogenous weight is 13.

Homogenous weight enumerator: w(x)=1x^0+60x^13+197x^14+360x^15+269x^16+860x^17+604x^18+864x^19+288x^20+356x^21+154x^22+56x^23+18x^24+4x^25+4x^26+1x^30

The gray image is a code over GF(2) with n=72, k=12 and d=26.
This code was found by Heurico 1.16 in 50.7 seconds.