The generator matrix

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

generates a code of length 57 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+124x^52+32x^53+108x^54+192x^55+430x^56+320x^57+422x^58+192x^59+83x^60+32x^61+64x^62+24x^64+14x^66+8x^68+1x^72+1x^100

The gray image is a code over GF(2) with n=456, k=11 and d=208.
This code was found by Heurico 1.16 in 0.266 seconds.