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

generates a code of length 56 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+18x^52+30x^53+23x^54+100x^55+165x^56+96x^57+38x^58+28x^59+8x^60+2x^61+2x^62+1x^110

The gray image is a code over GF(2) with n=224, k=9 and d=104.
This code was found by Heurico 1.16 in 0.0812 seconds.