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

generates a code of length 46 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+10x^42+33x^44+174x^46+26x^48+6x^50+3x^52+2x^54+1x^88

The gray image is a code over GF(2) with n=184, k=8 and d=84.
This code was found by Heurico 1.16 in 0.0355 seconds.