The generator matrix

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

generates a code of length 23 over Z8 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+114x^20+148x^22+169x^24+40x^26+33x^28+4x^30+2x^32+1x^36

The gray image is a code over GF(2) with n=92, k=9 and d=40.
This code was found by Heurico 1.16 in 0.621 seconds.