The generator matrix

 1  1  1  1  1  1  1  1  1  1  2  1  2  1  2  2  4  2  1  2  4  2  1
 0  2  0  0  0  0  0  0  4  6  2  2  2  2  4  6  0  4  2  2  2  4  4
 0  0  2  0  0  0  2  6  6  2  2  0  6  2  6  4  2  0  4  2  0  2  6
 0  0  0  2  0  2  2  6  0  4  4  2  2  6  2  6  0  2  4  6  0  6  4
 0  0  0  0  2  2  0  6  2  6  4  4  6  0  4  6  2  4  0  6  4  6  4
 0  0  0  0  0  4  0  0  0  0  0  4  0  4  4  0  0  0  4  4  4  4  4
 0  0  0  0  0  0  4  0  0  0  4  4  4  4  4  4  4  0  0  0  4  4  0
 0  0  0  0  0  0  0  4  4  4  0  4  4  4  0  0  0  4  0  0  0  4  0

generates a code of length 23 over Z8 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+62x^15+175x^16+284x^17+429x^18+752x^19+1182x^20+1710x^21+2300x^22+2490x^23+2294x^24+1854x^25+1254x^26+742x^27+408x^28+234x^29+108x^30+48x^31+34x^32+14x^33+5x^34+2x^35+2x^36

The gray image is a code over GF(2) with n=92, k=14 and d=30.
This code was found by Heurico 1.16 in 2.96 seconds.