The generator matrix

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

generates a code of length 22 over GR(64,4) who´s minimum homogenous weight is 128.

Homogenous weight enumerator: w(x)=1x^0+70x^128+168x^133+224x^134+567x^136+1792x^140+3528x^141+2016x^142+777x^144+3584x^147+25088x^148+24696x^149+9632x^150+714x^152+25088x^155+87808x^156+57624x^157+16800x^158+1029x^160+679x^168+259x^176

The gray image is a code over GF(8) with n=176, k=6 and d=128.
This code was found by Heurico 1.16 in 4.15 seconds.