The generator matrix

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

generates a code of length 30 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+72x^60+6x^66+2x^72

The gray image is a code over GF(3) with n=270, k=4 and d=180.
This code was found by Heurico 1.16 in 0.00494 seconds.