The generator matrix

 1  0  0  1  1  1  X X+2  1 X+2  1  1  2  1  1  2  1  2  X X+2  1  0  1  1  1  1  X  0  X  1  1 X+2  1  2  1  1  0  0  X  1  2  1  1  1  X  1  1  1  1  1  0  1  1  1
 0  1  0  0  1  3  1  1 X+1  2  0  0  1 X+1 X+2  1  X  1  2  X X+3  1  X  1  X X+1  1  1  1 X+3 X+2  1 X+3  1 X+3  3  2  1 X+2  3  0  0 X+2  X  1  3  X  1  1  2  1 X+2  3  2
 0  0  1  1  1  0  3  0  2  1 X+2 X+3 X+3  3 X+3  X  2  3  1  1  3  1  1  0  2  X  1 X+2 X+2 X+1  X  2 X+2 X+3 X+2  1  1  X  1  0  1  1  2  3 X+1  1  1 X+2  0 X+2  3 X+2  3  2
 0  0  0  X  0  2  0  0  2  2  2  2  0  0  2  0  0  2 X+2  X  X X+2 X+2  X  X X+2 X+2 X+2  2 X+2  X X+2  X  2  0 X+2  X  X  2 X+2  0 X+2 X+2  0  0  0  2  X X+2  2  X  2  0 X+2
 0  0  0  0  2  2  2  2  0  2  2  0  0  0  2  2  0  0  0  2  2  0  2  2  0  0  2  2  0  0  0  0  0  2  0  0  0  2  2  2  2  0  2  2  2  0  0  0  0  2  2  0  2  0

generates a code of length 54 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+99x^48+208x^49+502x^50+336x^51+513x^52+294x^53+462x^54+254x^55+443x^56+224x^57+334x^58+118x^59+119x^60+64x^61+74x^62+26x^63+5x^64+8x^65+4x^66+2x^67+4x^68+2x^69

The gray image is a code over GF(2) with n=216, k=12 and d=96.
This code was found by Heurico 1.16 in 0.642 seconds.