The generator matrix

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

generates a code of length 6 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 4.

Homogenous weight enumerator: w(x)=1x^0+38x^4+128x^5+180x^6+128x^7+33x^8+4x^10

The gray image is a code over GF(2) with n=48, k=9 and d=16.
This code was found by Heurico 1.16 in 3.62e-008 seconds.