The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+60x^20+220x^21+430x^22+708x^23+923x^24+1082x^25+1276x^26+1226x^27+935x^28+656x^29+392x^30+168x^31+64x^32+26x^33+12x^34+10x^35+1x^36+2x^38

The gray image is a code over GF(2) with n=104, k=13 and d=40.
This code was found by Heurico 1.16 in 0.672 seconds.