The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+165x^18+68x^19+492x^20+228x^21+904x^22+440x^23+856x^24+216x^25+498x^26+68x^27+116x^28+4x^29+32x^30+7x^32+1x^34

The gray image is a code over GF(2) with n=92, k=12 and d=36.
This code was found by Heurico 1.16 in 0.361 seconds.