The generator matrix

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

generates a code of length 48 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+196x^42+112x^43+402x^44+304x^45+488x^46+356x^47+487x^48+368x^49+468x^50+264x^51+288x^52+128x^53+130x^54+4x^55+55x^56+28x^58+13x^60+2x^62+1x^64+1x^68

The gray image is a code over GF(2) with n=192, k=12 and d=84.
This code was found by Heurico 1.16 in 20.6 seconds.