The generator matrix

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

generates a code of length 21 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+652x^36+1074x^37+2178x^38+3540x^39+7194x^40+6804x^41+10762x^42+12906x^43+7398x^44+4614x^45+1608x^46+144x^47+102x^48+60x^49+8x^51+4x^54

The gray image is a code over GF(3) with n=189, k=10 and d=108.
This code was found by Heurico 1.16 in 2.4 seconds.