The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+54x^23+128x^24+254x^25+486x^26+634x^27+833x^28+1096x^29+1168x^30+1148x^31+955x^32+626x^33+366x^34+202x^35+127x^36+68x^37+28x^38+10x^39+3x^40+4x^41+1x^48

The gray image is a code over GF(2) with n=120, k=13 and d=46.
This code was found by Heurico 1.16 in 0.989 seconds.