The generator matrix

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

generates a code of length 35 over GR(64,4) who´s minimum homogenous weight is 227.

Homogenous weight enumerator: w(x)=1x^0+840x^227+392x^231+1953x^232+3360x^233+15120x^234+10080x^235+1344x^238+5488x^239+11277x^240+11200x^241+30240x^242+17640x^243+9408x^246+19208x^247+26558x^248+21280x^249+51408x^250+25200x^251+77x^256+49x^264+21x^272

The gray image is a code over GF(8) with n=280, k=6 and d=227.
This code was found by Heurico 1.16 in 6.73 seconds.