The generator matrix

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

generates a code of length 19 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 16.

Homogenous weight enumerator: w(x)=1x^0+249x^16+368x^17+1008x^18+800x^19+1116x^20+368x^21+144x^22+38x^24+4x^28

The gray image is a code over GF(2) with n=152, k=12 and d=64.
This code was found by Heurico 1.16 in 40.7 seconds.