The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+97x^52+270x^54+555x^56+688x^58+906x^60+708x^62+520x^64+240x^66+69x^68+14x^70+13x^72+8x^76+7x^80

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 0.73 seconds.