The generator matrix

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

generates a code of length 32 over Z8 who´s minimum homogenous weight is 23.

Homogenous weight enumerator: w(x)=1x^0+64x^23+214x^24+544x^25+854x^26+2106x^27+2918x^28+5684x^29+6206x^30+9834x^31+8362x^32+10226x^33+6118x^34+5926x^35+2914x^36+1890x^37+870x^38+494x^39+174x^40+86x^41+28x^42+8x^43+8x^44+2x^45+4x^46+1x^48

The gray image is a code over GF(2) with n=128, k=16 and d=46.
This code was found by Heurico 1.16 in 49 seconds.