The generator matrix

 1  0  0  0  0  1  1  1  4  1  1  2  4  6  2  2  1  2  1
 0  1  0  0  0  1  2  5  1  3  1  0  1  1  6  1  6  1  0
 0  0  1  0  0  1  4  0  6  0  5  1  7  1  1  6  6  7  1
 0  0  0  1  0  1  5  2  5  3  0  6  7  4  5  0  6  4  2
 0  0  0  0  1  4  1  7  5  2  2  7  2  7  2  5  7  6  0

generates a code of length 19 over Z8 who´s minimum homogenous weight is 13.

Homogenous weight enumerator: w(x)=1x^0+108x^13+525x^14+1188x^15+2358x^16+3736x^17+5496x^18+5738x^19+5684x^20+3924x^21+2373x^22+1024x^23+403x^24+152x^25+54x^26+2x^27+2x^28

The gray image is a code over GF(2) with n=76, k=15 and d=26.
This code was found by Heurico 1.11 in 2.5 seconds.