The generator matrix

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

generates a code of length 50 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+203x^46+276x^48+136x^50+192x^52+163x^54+40x^56+8x^58+1x^62+3x^64+1x^70

The gray image is a code over GF(2) with n=200, k=10 and d=92.
This code was found by Heurico 1.16 in 69 seconds.