The generator matrix

 1  0  0  0  1  1  1  X  0  1  1  X X^2  1  1  1  1  0  1  0 X^2+X  X X^2  1  1 X^2+X  1  1  1  1  1  X X^2+X  1  1  1  1  0  1 X^2+X  1 X^2  1  1  1  0  1  1
 0  1  0  0  1 X^2 X+1  1  X  1 X^2+1  1  1  X X^2+X X^2 X^2+X  1 X^2+X+1  1  1 X^2 X^2+X X+1  0 X^2+X  0 X^2+1  1 X^2+X+1  X  0 X^2 X^2+X+1  0 X^2+X+1 X^2+X  1 X^2+1  0  X  1  0 X^2+X  1 X^2+X  X  0
 0  0  1  0  1 X^2+1 X^2 X^2+1  1 X+1  0  X X^2+X+1 X^2  1 X^2+X X+1  X X^2+1 X^2+1 X^2+X  1  X  X X^2  1 X^2+1 X+1 X^2+X+1  X  X X^2+X  0 X+1 X^2+X X^2+X+1 X^2+1 X^2  X  1 X^2+1  1 X^2+X+1  X X^2  1  0  0
 0  0  0  1 X^2  1 X^2+1 X^2+X+1 X+1  1  X X^2+1 X^2+X  1 X^2+X X^2+X+1 X^2  1 X^2+X X^2+1 X^2+X X^2+X  1 X+1  X X^2+X+1 X+1  0 X^2+X+1 X^2 X^2+X  1  1 X^2+X  X X^2+X+1 X^2+1 X^2+X X^2+X+1  1 X^2  0  0  0 X^2+1 X^2+1  0  0

generates a code of length 48 over Z2[X]/(X^3) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+80x^42+276x^43+302x^44+468x^45+426x^46+494x^47+309x^48+384x^49+297x^50+396x^51+218x^52+196x^53+97x^54+54x^55+46x^56+24x^57+11x^58+12x^59+4x^60+1x^62

The gray image is a linear code over GF(2) with n=192, k=12 and d=84.
This code was found by Heurico 1.11 in 0.188 seconds.