The generator matrix

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

generates a code of length 31 over Z8 who´s minimum homogenous weight is 24.

Homogenous weight enumerator: w(x)=1x^0+266x^24+464x^26+609x^28+1700x^30+2048x^31+1785x^32+616x^34+446x^36+228x^38+28x^40+1x^60

The gray image is a code over GF(2) with n=124, k=13 and d=48.
This code was found by Heurico 1.16 in 21.9 seconds.