The generator matrix

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

generates a code of length 18 over Z8 who´s minimum homogenous weight is 14.

Homogenous weight enumerator: w(x)=1x^0+144x^14+136x^15+292x^16+240x^17+421x^18+272x^19+288x^20+112x^21+106x^22+8x^23+25x^24+1x^26+2x^28

The gray image is a code over GF(2) with n=72, k=11 and d=28.
This code was found by Heurico 1.16 in 1.13 seconds.