The generator matrix

 1  0  1  1  1  1  1  1  1  0  1  1  1  1  0  1  1  1  1  X  1  1  1  1  X  1  1  X  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 a*X  X  0
 0  1  1  a a^2*X+a^2  0 a^2*X+1  a a^2*X+a^2  1  0  a a^2*X+1 a^2*X+a^2  1  X a^2*X+1 X+a a*X+a^2  1  X  1 X+a a*X+a^2  1  X a*X+1  1 X+a a^2 a^2*X+1 a*X+1 X+1  0  a a^2*X a*X+a^2 a*X+a a*X a*X+a a*X+a^2  1 a^2*X+1 X+a a^2*X+a^2 a*X+1 a*X+a a*X+a a^2 X+a^2 a^2*X+a^2  1 X+a a*X+a^2  1  1  1
 0  0 a^2*X  0  X  0  X a*X a*X a*X a*X  X a^2*X a^2*X  0 a^2*X  0 a^2*X  0  X  X a*X a*X  X a^2*X a*X  X a*X a^2*X a*X  0 a^2*X a^2*X a*X a*X  0 a*X a^2*X  X a^2*X  X  0  X a*X  X  X  X  0 a^2*X a*X a^2*X  0  0  0  0 a*X a^2*X
 0  0  0  X a*X a*X  0 a*X  X  X  0  X a*X  X  X  0  0  X  X  X  0  0  X  X  X a*X a*X  0 a*X a*X a*X a^2*X  X  X  0 a^2*X a^2*X a^2*X a^2*X  0 a^2*X a^2*X  X a^2*X  0 a^2*X a^2*X  0 a^2*X  0 a*X  X a^2*X  0 a*X a^2*X a^2*X

generates a code of length 57 over F4[X]/(X^2) who´s minimum homogenous weight is 164.

Homogenous weight enumerator: w(x)=1x^0+924x^164+1254x^168+726x^172+417x^176+648x^180+111x^184+6x^188+6x^192+3x^200

The gray image is a linear code over GF(4) with n=228, k=6 and d=164.
This code was found by Heurico 1.16 in 0.354 seconds.