The generator matrix

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

generates a code of length 51 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+270x^46+342x^48+480x^50+336x^52+398x^54+149x^56+46x^58+20x^62+3x^64+2x^66+1x^72

The gray image is a code over GF(2) with n=204, k=11 and d=92.
This code was found by Heurico 1.16 in 71.7 seconds.