The generator matrix

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

generates a code of length 20 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 33.

Homogenous weight enumerator: w(x)=1x^0+104x^33+618x^34+870x^35+2014x^36+3534x^37+6348x^38+7186x^39+12996x^40+11952x^41+7132x^42+4674x^43+1200x^44+304x^45+48x^46+42x^47+20x^48+6x^51

The gray image is a code over GF(3) with n=180, k=10 and d=99.
This code was found by Heurico 1.16 in 1.55 seconds.