The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+94x^10+140x^11+414x^12+736x^13+1833x^14+4128x^15+7829x^16+11376x^17+12448x^18+11368x^19+7752x^20+4160x^21+1934x^22+736x^23+370x^24+112x^25+74x^26+12x^27+18x^28+1x^30

The gray image is a code over GF(2) with n=72, k=16 and d=20.
This code was found by Heurico 1.16 in 10.2 seconds.