The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  4  2  0  1  0  4  2  1  2  1
 0  2  0  0  0  0  0  0  0  2  2  6  2  2  4  2  0  2  2  4  0  2  4  4  4
 0  0  2  0  0  0  2  6  2  4  2  2  0  2  0  2  2  4  0  4  2  6  4  6  0
 0  0  0  2  0  2  2  2  4  4  4  4  6  2  2  6  4  4  0  0  2  4  4  0  2
 0  0  0  0  2  2  0  2  6  2  0  2  4  2  4  6  2  0  6  2  4  0  2  4  4
 0  0  0  0  0  4  0  0  0  0  0  0  0  4  0  4  0  0  4  4  4  4  0  4  4
 0  0  0  0  0  0  4  4  0  0  0  0  0  0  4  4  4  4  4  0  4  4  4  0  0

generates a code of length 25 over Z8 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+161x^18+429x^20+128x^21+890x^22+448x^23+1619x^24+832x^25+1556x^26+576x^27+897x^28+64x^29+441x^30+120x^32+22x^34+6x^36+1x^38+1x^42

The gray image is a code over GF(2) with n=100, k=13 and d=36.
This code was found by Heurico 1.16 in 1.05 seconds.