The generator matrix

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

generates a code of length 36 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+1248x^63+2946x^64+5184x^65+11022x^66+15552x^67+23958x^68+39728x^69+48768x^70+63234x^71+78822x^72+73950x^73+65232x^74+53490x^75+27108x^76+12978x^77+5846x^78+2082x^79+92x^81+144x^82+18x^84+36x^85+2x^87

The gray image is a code over GF(3) with n=324, k=12 and d=189.
This code was found by Heurico 1.16 in 301 seconds.