The generator matrix

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

generates a code of length 51 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+130x^46+74x^48+326x^50+280x^52+126x^54+28x^56+58x^58+1x^96

The gray image is a code over GF(2) with n=204, k=10 and d=92.
This code was found by Heurico 1.16 in 1.02 seconds.