The generator matrix

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

generates a code of length 30 over Z8 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+121x^20+24x^21+312x^22+200x^23+855x^24+624x^25+2446x^26+1296x^27+5050x^28+1952x^29+6968x^30+1952x^31+5035x^32+1296x^33+2580x^34+624x^35+845x^36+200x^37+224x^38+24x^39+107x^40+14x^42+16x^44+2x^48

The gray image is a code over GF(2) with n=120, k=15 and d=40.
This code was found by Heurico 1.16 in 11.9 seconds.