The generator matrix

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

generates a code of length 23 over Z8 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+325x^18+240x^19+838x^20+744x^21+1384x^22+1104x^23+1426x^24+768x^25+866x^26+192x^27+226x^28+24x^29+48x^30+5x^32+1x^34

The gray image is a code over GF(2) with n=92, k=13 and d=36.
This code was found by Heurico 1.16 in 27.1 seconds.