The generator matrix

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

generates a code of length 60 over Z8 who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+143x^52+8x^53+328x^54+68x^55+369x^56+164x^57+452x^58+272x^59+576x^60+272x^61+454x^62+164x^63+326x^64+68x^65+192x^66+8x^67+120x^68+70x^70+32x^72+8x^74+1x^92

The gray image is a code over GF(2) with n=240, k=12 and d=104.
This code was found by Heurico 1.16 in 0.964 seconds.