The generator matrix

 1  0  1  1  1  1  1  1  1
 0  1  1  a 3a^2+2 2a^2+3a+1 a^2+3a a^2+3a+3 3a^2+2a+3
 0  0 2a^2+2 2a 2a+2 2a^2+2a+2  2 2a^2 2a^2+2a

generates a code of length 9 over GR(64,4) who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+4284x^56+28287x^64+196x^72

The gray image is a code over GF(8) with n=72, k=5 and d=56.
This code was found by Heurico 1.16 in 0.00826 seconds.