The generator matrix

 1  0  1  1  1  0  1  1  0  1  1  4  2  1  1  4  1  0  1  1  0  1  1  2  2  1
 0  1  1  0  1  1  0  3  1  3  7  1  1  3  6  1  4  1  1  6  2  5  4  1  6  0
 0  0  2  0  0  0  0  0  0  6  2  4  6  6  2  2  0  4  2  4  4  6  6  6  0  2
 0  0  0  2  0  0  0  2  2  6  4  0  4  6  4  2  4  0  2  2  6  6  2  2  2  2
 0  0  0  0  2  0  2  2  4  2  6  6  2  4  0  0  2  6  6  0  0  0  4  0  2  2
 0  0  0  0  0  2  2  4  6  6  6  4  6  0  2  6  4  6  4  2  2  6  2  4  0  6
 0  0  0  0  0  0  4  0  0  0  0  4  4  0  4  0  4  0  0  4  4  0  0  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+168x^18+24x^19+732x^20+364x^21+1816x^22+1840x^23+4379x^24+3908x^25+6130x^26+3928x^27+4642x^28+1844x^29+1850x^30+352x^31+563x^32+28x^33+142x^34+50x^36+6x^38+1x^40

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 11.1 seconds.