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+7 X+6  5  1  6 2X+1  1  X X+5 2X X+1 X+1  0 2X+1
 0  0 2X  0  6  6 X+6 2X+6 X+3  X  X  X 2X+3 2X+3  0 2X 2X+3 X+3
 0  0  0  3  6  3  3  0  6  6  6  3  0  3  0  6  6  6

generates a code of length 18 over Z9[X]/(X^2+6,3X) 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 0.245 seconds.