The generator matrix

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

generates a code of length 21 over Z8 who´s minimum homogenous weight is 13.

Homogenous weight enumerator: w(x)=1x^0+54x^13+388x^14+948x^15+2874x^16+4748x^17+10455x^18+14280x^19+20981x^20+21466x^21+21215x^22+14068x^23+10645x^24+4946x^25+2621x^26+848x^27+439x^28+80x^29+9x^30+4x^32+2x^33

The gray image is a code over GF(2) with n=84, k=17 and d=26.
This code was found by Heurico 1.11 in 35.4 seconds.