The generator matrix

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

generates a code of length 26 over Z8 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+52x^20+80x^21+280x^22+240x^23+590x^24+452x^25+737x^26+468x^27+564x^28+216x^29+279x^30+56x^31+37x^32+20x^33+15x^34+4x^35+4x^36+1x^38

The gray image is a code over GF(2) with n=104, k=12 and d=40.
This code was found by Heurico 1.16 in 0.204 seconds.