The generator matrix

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

generates a code of length 32 over GR(64,4) who´s minimum homogenous weight is 206.

Homogenous weight enumerator: w(x)=1x^0+448x^206+56x^208+616x^210+2520x^211+3360x^212+14560x^213+5376x^214+182x^216+1344x^217+8624x^218+15120x^219+11200x^220+29120x^221+9408x^222+70x^224+9408x^225+30184x^226+36120x^227+21280x^228+49504x^229+13440x^230+105x^232+77x^240+21x^248

The gray image is a code over GF(8) with n=256, k=6 and d=206.
This code was found by Heurico 1.16 in 6.12 seconds.