The generator matrix

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

generates a code of length 18 over Z4[X]/(X^2+2X+2) who´s minimum homogenous weight is 17.

Homogenous weight enumerator: w(x)=1x^0+76x^17+101x^18+76x^19+1x^26+1x^28

The gray image is a code over GF(2) with n=144, k=8 and d=68.
This code was found by Heurico 1.16 in 3.81e-009 seconds.