The generator matrix

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

generates a code of length 30 over Z8 who´s minimum homogenous weight is 23.

Homogenous weight enumerator: w(x)=1x^0+44x^23+105x^24+200x^25+225x^26+250x^27+412x^28+598x^29+564x^30+378x^31+433x^32+414x^33+214x^34+78x^35+60x^36+66x^37+20x^38+18x^39+13x^40+2x^41+1x^42

The gray image is a code over GF(2) with n=120, k=12 and d=46.
This code was found by Heurico 1.16 in 0.389 seconds.