The generator matrix

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

generates a code of length 29 over Z8 who´s minimum homogenous weight is 23.

Homogenous weight enumerator: w(x)=1x^0+68x^23+137x^24+160x^25+347x^26+512x^27+548x^28+576x^29+564x^30+504x^31+313x^32+160x^33+106x^34+64x^35+20x^36+4x^38+4x^39+5x^40+3x^42

The gray image is a code over GF(2) with n=116, k=12 and d=46.
This code was found by Heurico 1.16 in 0.563 seconds.