The generator matrix

 1  0  0  1  1  1 X+2  X  1  1  1  X  1  2  1  1  X X+2  1  1  1  2  1  2  1  1 X+2  X  1  X  1  2  2  1  1  0  1  1  1  1  1  1  1  1  1  1  1 X+2  1 X+2  1
 0  1  0  0  3 X+1  1  2  0  0 X+3  1  1  1  3  X  1  1  1  2 X+2 X+2  3  1 X+3 X+1  1  1 X+3  X X+3  1  1 X+3  1  1  0  X  0 X+3  1  X  0  2  X  2 X+2  1 X+3  1  2
 0  0  1  1  3  2  3  1  2 X+1 X+3  2  2  1  1 X+2 X+1  2  X  3  2  1  1  X  X  1  X X+3  X  1  0 X+3 X+3  1 X+3  3  2  1 X+2 X+2  2  X X+3  0  0  3 X+1  3  3  1  X
 0  0  0  X  X  0  X  X X+2  2  0 X+2  X  2 X+2  0  X  2  2  2 X+2  X  0  X X+2 X+2  0  0  2  X  X  2  0  0  X  X  2  2  2  X  0  X  X  X  0  0  X  0 X+2  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+93x^46+158x^47+254x^48+258x^49+313x^50+194x^51+223x^52+128x^53+112x^54+90x^55+75x^56+30x^57+50x^58+18x^59+21x^60+16x^61+7x^62+4x^63+2x^64+1x^66

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 0.171 seconds.