The generator matrix

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

generates a code of length 20 over Z8 who´s minimum homogenous weight is 16.

Homogenous weight enumerator: w(x)=1x^0+201x^16+388x^17+572x^18+592x^19+651x^20+552x^21+550x^22+368x^23+176x^24+20x^25+20x^26+3x^28+2x^30

The gray image is a code over GF(2) with n=80, k=12 and d=32.
This code was found by Heurico 1.11 in 0.068 seconds.