The generator matrix

 1  1  1  1  1  1  1  1  1  X  1  1  1  1  1  1
 0  6  0  0  6  0  6  6  3  6  0  0  6  6  0  6
 0  0  6  0  3  6  3  6  3  0  0  6  6  0  0  3
 0  0  0  6  3  3  0  3  3  6  3  6  0  3  0  3

generates a code of length 16 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 27.

Homogenous weight enumerator: w(x)=1x^0+20x^27+78x^30+486x^32+124x^33+8x^36+8x^42+4x^45

The gray image is a code over GF(3) with n=144, k=6 and d=81.
This code was found by Heurico 1.16 in 0.00161 seconds.