The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+64x^15+249x^16+550x^17+1422x^18+2666x^19+4694x^20+7478x^21+9958x^22+11186x^23+10084x^24+7594x^25+4786x^26+2654x^27+1322x^28+498x^29+210x^30+70x^31+34x^32+8x^33+8x^34

The gray image is a code over GF(2) with n=92, k=16 and d=30.
This code was found by Heurico 1.16 in 24.4 seconds.