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

generates a code of length 59 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+50x^56+64x^58+118x^60+21x^64+2x^84

The gray image is a code over GF(2) with n=236, k=8 and d=112.
This code was found by Heurico 1.16 in 0.0574 seconds.