The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+114x^18+354x^19+790x^20+1652x^21+3123x^22+5130x^23+7266x^24+9228x^25+10171x^26+9178x^27+7344x^28+5328x^29+3020x^30+1574x^31+809x^32+300x^33+115x^34+20x^35+14x^36+4x^37+1x^46

The gray image is a code over GF(2) with n=104, k=16 and d=36.
This code was found by Heurico 1.16 in 32.7 seconds.