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

generates a code of length 62 over Z8 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+154x^54+16x^55+323x^56+76x^57+411x^58+144x^59+495x^60+252x^61+465x^62+304x^63+452x^64+164x^65+322x^66+48x^67+182x^68+20x^69+140x^70+62x^72+43x^74+19x^76+1x^78+1x^80+1x^88

The gray image is a code over GF(2) with n=248, k=12 and d=108.
This code was found by Heurico 1.16 in 1.06 seconds.