The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+124x^18+12x^19+249x^20+112x^21+406x^22+264x^23+410x^24+112x^25+216x^26+12x^27+98x^28+22x^30+9x^32+1x^36

The gray image is a code over GF(2) with n=92, k=11 and d=36.
This code was found by Heurico 1.16 in 0.809 seconds.