The generator matrix

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

generates a code of length 49 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+56x^42+158x^43+171x^44+340x^45+271x^46+566x^47+303x^48+482x^49+295x^50+550x^51+224x^52+298x^53+117x^54+126x^55+48x^56+22x^57+21x^58+4x^59+21x^60+10x^61+8x^62+4x^63

The gray image is a code over GF(2) with n=196, k=12 and d=84.
This code was found by Heurico 1.16 in 0.636 seconds.