The generator matrix

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

generates a code of length 26 over Z8 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+58x^18+168x^19+382x^20+846x^21+1639x^22+2446x^23+3612x^24+4662x^25+4940x^26+4822x^27+3793x^28+2506x^29+1486x^30+746x^31+395x^32+178x^33+66x^34+10x^35+8x^36+3x^38+1x^44

The gray image is a code over GF(2) with n=104, k=15 and d=36.
This code was found by Heurico 1.16 in 8.64 seconds.