The generator matrix

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

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+96x^42+274x^43+320x^44+444x^45+394x^46+496x^47+314x^48+456x^49+267x^50+354x^51+212x^52+180x^53+122x^54+68x^55+47x^56+24x^57+15x^58+8x^59+2x^60+2x^62

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 0.529 seconds.