The generator matrix

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

generates a code of length 23 over Z8 who´s minimum homogenous weight is 16.

Homogenous weight enumerator: w(x)=1x^0+203x^16+152x^17+790x^18+1248x^19+2557x^20+3816x^21+4556x^22+5968x^23+4743x^24+3816x^25+2600x^26+1216x^27+778x^28+152x^29+116x^30+16x^31+36x^32+2x^34+1x^36+1x^40

The gray image is a code over GF(2) with n=92, k=15 and d=32.
This code was found by Heurico 1.16 in 7.02 seconds.