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

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

Homogenous weight enumerator: w(x)=1x^0+145x^52+258x^54+48x^55+472x^56+192x^57+490x^58+288x^59+518x^60+256x^61+428x^62+176x^63+335x^64+64x^65+164x^66+147x^68+66x^70+40x^72+2x^74+5x^76+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 0.997 seconds.