The generator matrix

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

generates a code of length 6 over GR(64,4) who´s minimum homogenous weight is 35.

Homogenous weight enumerator: w(x)=1x^0+336x^35+42x^40+1344x^42+2352x^43+21x^48

The gray image is a code over GF(8) with n=48, k=4 and d=35.
This code was found by Heurico 1.16 in 0.000233 seconds.