The generator matrix

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

generates a code of length 51 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 50.

Homogenous weight enumerator: w(x)=1x^0+36x^50+64x^51+12x^52+8x^54+2x^56+4x^58+1x^64

The gray image is a code over GF(2) with n=204, k=7 and d=100.
This code was found by Heurico 1.16 in 0.0666 seconds.