The generator matrix

 1  0  1  1  1  6  1  1  0  1  1  6  1  1  0  1  1  0  1  1  1  1  1
 0  1  3  6  1  1  0  3  1  6  1  1  0  3  1  3  0  1  3  3  3  0  0
 0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  0  0
 0  0  0  4  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  0  0  0
 0  0  0  0  4  0  0  0  0  0  0  0  4  4  4  0  0  0  4  4  4  0  0
 0  0  0  0  0  4  0  0  0  0  0  0  4  0  4  4  0  4  4  0  0  0  0
 0  0  0  0  0  0  4  0  0  0  0  4  0  0  4  4  0  4  0  4  4  0  0
 0  0  0  0  0  0  0  4  0  0  0  4  4  0  0  4  4  4  0  4  0  0  0
 0  0  0  0  0  0  0  0  4  0  0  4  4  0  4  0  4  4  4  0  4  0  0
 0  0  0  0  0  0  0  0  0  4  0  4  0  4  4  0  4  0  0  4  4  0  0
 0  0  0  0  0  0  0  0  0  0  4  0  4  4  0  4  4  0  4  0  4  0  0

generates a code of length 23 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+40x^12+164x^14+32x^15+214x^16+448x^17+448x^18+1536x^19+1264x^20+5696x^21+1944x^22+9152x^23+1904x^24+5696x^25+1360x^26+1536x^27+568x^28+448x^29+100x^30+32x^31+89x^32+80x^34+16x^36

The gray image is a code over GF(2) with n=92, k=15 and d=24.
This code was found by Heurico 1.16 in 3.09 seconds.