The generator matrix

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

generates a code of length 58 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+20x^56+68x^57+88x^58+56x^59+10x^60+4x^61+6x^62+1x^64+2x^82

The gray image is a code over GF(2) with n=232, k=8 and d=112.
This code was found by Heurico 1.16 in 0.0511 seconds.