The generator matrix

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

generates a code of length 18 over Z8 who´s minimum homogenous weight is 11.

Homogenous weight enumerator: w(x)=1x^0+8x^11+483x^12+360x^13+2640x^14+3224x^15+10081x^16+8696x^17+14576x^18+8696x^19+10006x^20+3224x^21+2736x^22+360x^23+414x^24+8x^25+16x^26+7x^28

The gray image is a code over GF(2) with n=72, k=16 and d=22.
This code was found by Heurico 1.16 in 22.6 seconds.