The generator matrix

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

generates a code of length 31 over Z8 who´s minimum homogenous weight is 23.

Homogenous weight enumerator: w(x)=1x^0+138x^23+504x^24+946x^25+1882x^26+3496x^27+5147x^28+6998x^29+8718x^30+9476x^31+8950x^32+7320x^33+5389x^34+3352x^35+1705x^36+840x^37+389x^38+178x^39+77x^40+22x^41+5x^42+2x^45+1x^46

The gray image is a code over GF(2) with n=124, k=16 and d=46.
This code was found by Heurico 1.16 in 45.7 seconds.