The generator matrix

 1  0  1  1  1  1  1  0  1  1  X  1  1  1  1  1  1  1
 0  1  1  8 2X+4 X+3  2  1  3 2X+1  1  X X+2 2X X+1 X+1  0 2X+1
 0  0 2X  0  3  3 X+3 2X+3 X+6  X  X  X 2X+6 2X+6  0 2X 2X+6 X+6
 0  0  0  6  3  6  6  0  3  3  3  6  0  6  0  3  3  3

generates a code of length 18 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+314x^30+36x^31+648x^32+1090x^33+1944x^34+2592x^35+5076x^36+3780x^37+2592x^38+1360x^39+72x^40+168x^42+8x^45+2x^51

The gray image is a code over GF(3) with n=162, k=9 and d=90.
This code was found by Heurico 1.16 in 0.234 seconds.