The generator matrix

 1  1  1  1  1  1  1  1  2  2  2  0  1  1  4  1  2  1  1  1  1  1  1
 0  2  0  2  0  0  2  6  0  2  2  2  0  4  2  2  2  2  2  0  2  4  0
 0  0  2  2  0  6  2  0  2  2  0  4  0  2  2  6  2  2  2  4  2  2  0
 0  0  0  4  0  0  0  0  0  0  0  4  4  4  0  0  0  0  4  4  0  0  0
 0  0  0  0  4  0  0  0  0  0  0  0  4  0  4  4  0  4  4  0  0  0  0
 0  0  0  0  0  4  0  0  0  0  0  4  4  0  4  0  0  4  0  4  0  0  0
 0  0  0  0  0  0  4  0  0  0  0  4  4  4  4  4  4  0  0  4  0  0  0
 0  0  0  0  0  0  0  4  0  0  0  0  4  4  4  0  4  4  0  0  0  0  0
 0  0  0  0  0  0  0  0  4  0  0  0  0  4  4  4  0  0  0  0  4  4  0
 0  0  0  0  0  0  0  0  0  4  0  0  0  0  0  0  4  4  4  0  4  4  0
 0  0  0  0  0  0  0  0  0  0  4  4  0  0  4  4  4  4  0  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+60x^12+32x^13+68x^14+108x^15+334x^16+436x^17+516x^18+1112x^19+2256x^20+3792x^21+5000x^22+5544x^23+4848x^24+3544x^25+2280x^26+1280x^27+604x^28+368x^29+308x^30+140x^31+65x^32+20x^33+20x^34+8x^35+24x^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 4.59 seconds.