The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  1  1  1
 0  2  0  0  0  0  0  0  6  0  2  2  4  4  2  2  4  0
 0  0  2  0  0  0  0  0  2  2  2  0  6  6  4  4  4  2
 0  0  0  2  0  0  0  2  2  0  6  4  2  2  0  0  0  4
 0  0  0  0  2  0  2  2  2  2  4  6  0  4  0  6  6  6
 0  0  0  0  0  2  2  0  2  4  2  0  4  2  6  6  6  0
 0  0  0  0  0  0  4  0  0  0  0  4  4  0  4  0  4  0
 0  0  0  0  0  0  0  4  0  4  0  0  4  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+94x^10+148x^11+381x^12+500x^13+886x^14+1212x^15+1667x^16+6308x^17+10343x^18+6356x^19+1636x^20+1244x^21+890x^22+468x^23+404x^24+140x^25+74x^26+8x^27+7x^28+1x^34

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 4.6 seconds.