The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+144x^18+88x^19+422x^20+352x^21+732x^22+656x^23+729x^24+352x^25+368x^26+88x^27+125x^28+36x^30+2x^32+1x^36

The gray image is a code over GF(2) with n=92, k=12 and d=36.
This code was found by Heurico 1.16 in 0.223 seconds.