The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+156x^23+491x^24+1170x^25+1544x^26+2990x^27+2969x^28+4640x^29+4160x^30+5390x^31+3325x^32+2908x^33+1406x^34+922x^35+374x^36+240x^37+54x^38+14x^39+7x^40+2x^41+2x^42+1x^44+2x^46

The gray image is a code over GF(2) with n=120, k=15 and d=46.
This code was found by Heurico 1.16 in 88.2 seconds.