The generator matrix

 1  0  0  0  1  1  1  1  1  1 2X  1  1  1  1  1  1  1  1
 0  1  0  0 2X+3  3  1 X+1 2X+8  2  1  7 X+8 2X+3 X+1 X+5  4 2X X+3
 0  0  1  0 2X+4 2X+3  8 X+1  6 2X+5 2X+5 2X+6  4 2X+8 2X+7  5 X+6 X+8  3
 0  0  0  1 2X+2 2X+4  1 2X  2 X+6 X+1 X+1 2X+7 X+8 X+4  5  X  6 X+4

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+602x^30+1002x^31+3876x^32+8014x^33+19944x^34+20724x^35+68138x^36+71544x^37+94278x^38+126096x^39+72564x^40+28290x^41+13514x^42+2574x^43+84x^44+144x^45+42x^46+6x^47+4x^48

The gray image is a code over GF(3) with n=171, k=12 and d=90.
This code was found by Heurico 1.16 in 93.5 seconds.