The generator matrix

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

generates a code of length 9 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+52x^6+78x^8+256x^9+72x^10+48x^12+4x^14+1x^16

The gray image is a code over GF(2) with n=36, k=9 and d=12.
This code was found by Heurico 1.16 in 0.00106 seconds.