The generator matrix

 1  0  1  1  1  0  1  1  6  1  1  0  6  2  6  2  2
 0  1  1  6  3  1  0  7  1  2  5  1  1  1  1  4  1
 0  0  2  0  0  6  6  6  4  2  0  0  0  2  4  2  2
 0  0  0  4  0  0  0  4  4  4  4  0  0  4  0  4  4
 0  0  0  0  4  0  0  0  0  4  0  4  4  4  0  4  0
 0  0  0  0  0  4  0  0  0  4  4  4  0  4  4  0  0
 0  0  0  0  0  0  4  0  0  0  4  4  4  4  0  0  4

generates a code of length 17 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+115x^12+428x^14+256x^15+1035x^16+512x^17+904x^18+256x^19+492x^20+76x^22+20x^24+1x^28

The gray image is a code over GF(2) with n=68, k=12 and d=24.
This code was found by Heurico 1.16 in 0.116 seconds.