The generator matrix

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

generates a code of length 63 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+139x^56+88x^57+276x^58+224x^59+526x^60+296x^61+390x^62+320x^63+400x^64+296x^65+434x^66+224x^67+227x^68+88x^69+82x^70+32x^72+26x^74+14x^76+8x^78+3x^80+1x^84+1x^88

The gray image is a code over GF(2) with n=252, k=12 and d=112.
This code was found by Heurico 1.16 in 0.844 seconds.