The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  X  1  X  1  X  1  1  1  X  X  X  1  X  X  1  X  X  X  X  X  1  1  1  1  1  1  X  1  1  1  1  1  1  1  1  1  1  1  1
 0  2  0  2  0  2  0  2 2X 2X+2 2X 2X+2 2X 2X+2 2X 2X+2  0  2  2  0  2  2  2  0  2  0  2  2  0 2X  0 2X  0 2X+2 2X 2X+2 2X 2X+2 2X+2 2X 2X+2 2X+2 2X 2X+2 2X 2X+2  0  2  2  2 2X+2  0 2X  0 2X  0 2X  0  2
 0  0 2X  0  0 2X 2X 2X 2X 2X 2X 2X  0  0  0  0  0  0  0 2X 2X 2X  0  0 2X 2X  0 2X  0  0 2X 2X 2X 2X 2X  0 2X 2X  0 2X 2X 2X  0  0  0  0  0  0  0 2X 2X  0  0  0  0 2X 2X 2X  0
 0  0  0 2X 2X 2X 2X  0  0  0 2X 2X 2X 2X  0  0  0  0 2X 2X  0 2X  0 2X 2X  0 2X  0 2X 2X 2X  0  0  0 2X 2X  0 2X  0 2X  0 2X 2X 2X  0  0  0  0 2X 2X  0  0  0 2X 2X 2X 2X  0  0

generates a code of length 59 over Z4[X]/(X^2+2X+2) who´s minimum homogenous weight is 57.

Homogenous weight enumerator: w(x)=1x^0+14x^57+18x^58+202x^59+6x^60+2x^61+4x^62+6x^63+2x^74+1x^88

The gray image is a code over GF(2) with n=472, k=8 and d=228.
This code was found by Heurico 1.16 in 1.95 seconds.