The generator matrix

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

generates a code of length 60 over Z8 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+176x^54+172x^55+527x^56+188x^57+709x^58+226x^59+516x^60+128x^61+470x^62+148x^63+345x^64+60x^65+216x^66+84x^67+68x^68+8x^69+26x^70+8x^71+15x^72+3x^74+2x^75

The gray image is a code over GF(2) with n=240, k=12 and d=108.
This code was found by Heurico 1.16 in 0.615 seconds.