The generator matrix

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

generates a code of length 26 over Z8 who´s minimum homogenous weight is 21.

Homogenous weight enumerator: w(x)=1x^0+240x^21+482x^22+800x^23+889x^24+1126x^25+1098x^26+1198x^27+938x^28+732x^29+382x^30+236x^31+41x^32+14x^33+6x^34+6x^35+2x^36+1x^40

The gray image is a code over GF(2) with n=104, k=13 and d=42.
This code was found by Heurico 1.11 in 5.77 seconds.