The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+163x^20+464x^21+790x^22+1452x^23+1647x^24+2628x^25+1984x^26+2792x^27+1687x^28+1480x^29+686x^30+364x^31+176x^32+36x^33+28x^34+6x^36

The gray image is a code over GF(2) with n=104, k=14 and d=40.
This code was found by Heurico 1.16 in 2.44 seconds.