The generator matrix

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

generates a code of length 48 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+238x^45+396x^46+392x^47+224x^48+252x^49+204x^50+198x^51+94x^52+30x^53+2x^54+6x^55+4x^57+5x^58+1x^60+1x^62

The gray image is a code over GF(2) with n=384, k=11 and d=180.
This code was found by Heurico 1.16 in 0.094 seconds.