The generator matrix

 1  0  0  1  1  1 2X  1  1 X+3  1  1  X  1  1  1  1  1  1
 0  1  0  1 2X+3  8  1  4  8  1 2X+8 2X+8  1  X 2X+3 X+1 2X+2 X+2  3
 0  0  1  8 2X+4  8 2X+1  4  X X+2 2X+1 X+1 2X+1 X+5 2X+2 2X+5  5 2X+3 X+3
 0  0  0 2X 2X+3  6 X+6 X+3 X+6  X  X 2X+3  6  6 X+6  0 X+3  3 2X+3

generates a code of length 19 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+248x^30+90x^31+1530x^32+3010x^33+5496x^34+8514x^35+21824x^36+21102x^37+36822x^38+40752x^39+21186x^40+11340x^41+4730x^42+192x^43+108x^44+144x^45+48x^46+6x^47+4x^48

The gray image is a code over GF(3) with n=171, k=11 and d=90.
This code was found by Heurico 1.16 in 11.9 seconds.