The generator matrix

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

generates a code of length 23 over Z8 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+258x^18+304x^19+743x^20+884x^21+1304x^22+1184x^23+1317x^24+968x^25+746x^26+208x^27+201x^28+36x^29+28x^30+10x^32

The gray image is a code over GF(2) with n=92, k=13 and d=36.
This code was found by Heurico 1.16 in 10.1 seconds.