The generator matrix

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

generates a code of length 17 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 14.

Homogenous weight enumerator: w(x)=1x^0+164x^14+384x^15+937x^16+1152x^17+922x^18+384x^19+128x^20+16x^22+6x^24+2x^26

The gray image is a code over GF(2) with n=136, k=12 and d=56.
This code was found by Heurico 1.16 in 80.1 seconds.