The generator matrix

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

generates a code of length 21 over Z8 who´s minimum homogenous weight is 16.

Homogenous weight enumerator: w(x)=1x^0+353x^16+128x^17+832x^18+512x^19+1890x^20+768x^21+1796x^22+512x^23+1044x^24+128x^25+184x^26+38x^28+4x^30+2x^32

The gray image is a code over GF(2) with n=84, k=13 and d=32.
This code was found by Heurico 1.16 in 0.542 seconds.