The generator matrix

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

generates a code of length 18 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+58x^15+250x^16+466x^17+578x^18+392x^19+197x^20+66x^21+29x^22+10x^23+1x^26

The gray image is a code over GF(2) with n=144, k=11 and d=60.
This code was found by Heurico 1.16 in 0.016 seconds.