The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+89x^18+328x^19+851x^20+1296x^21+2735x^22+3512x^23+4981x^24+5056x^25+5107x^26+3576x^27+2763x^28+1296x^29+763x^30+264x^31+102x^32+32x^33+8x^34+6x^36+2x^38

The gray image is a code over GF(2) with n=100, k=15 and d=36.
This code was found by Heurico 1.16 in 8.1 seconds.