The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+117x^16+132x^17+334x^18+500x^19+580x^20+776x^21+598x^22+520x^23+290x^24+116x^25+90x^26+4x^27+36x^28+2x^30

The gray image is a code over GF(2) with n=84, k=12 and d=32.
This code was found by Heurico 1.16 in 0.18 seconds.