The generator matrix

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

generates a code of length 18 over Z8 who´s minimum homogenous weight is 10.

Homogenous weight enumerator: w(x)=1x^0+42x^10+16x^11+213x^12+144x^13+1304x^14+2032x^15+3369x^16+6000x^17+6524x^18+6000x^19+3378x^20+2032x^21+1304x^22+144x^23+198x^24+16x^25+42x^26+9x^28

The gray image is a code over GF(2) with n=72, k=15 and d=20.
This code was found by Heurico 1.16 in 2.1 seconds.