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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+68x^48+88x^50+112x^51+285x^52+224x^53+252x^54+400x^55+382x^56+576x^57+276x^58+400x^59+327x^60+224x^61+132x^62+112x^63+185x^64+20x^66+19x^68+2x^72+9x^76+2x^80

The gray image is a code over GF(2) with n=228, k=12 and d=96.
This code was found by Heurico 1.16 in 0.659 seconds.