The generator matrix

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

generates a code of length 5 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 2.

Homogenous weight enumerator: w(x)=1x^0+17x^2+142x^4+192x^5+142x^6+17x^8+1x^10

The gray image is a code over GF(2) with n=20, k=9 and d=4.
This code was found by Heurico 1.16 in 0.000141 seconds.