The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+168x^18+575x^20+1181x^22+432x^23+2299x^24+1728x^25+3575x^26+1440x^27+2787x^28+448x^29+1073x^30+48x^31+438x^32+141x^34+42x^36+6x^38+2x^40

The gray image is a code over GF(2) with n=104, k=14 and d=36.
This code was found by Heurico 1.16 in 4.03 seconds.