The generator matrix

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

generates a code of length 39 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+22x^36+72x^38+320x^39+77x^40+16x^42+3x^44+1x^76

The gray image is a code over GF(2) with n=312, k=9 and d=144.
This code was found by Heurico 1.16 in 0.047 seconds.