The generator matrix

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

generates a code of length 36 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 69.

Homogenous weight enumerator: w(x)=1x^0+648x^69+882x^72+648x^75+8x^81

The gray image is a code over GF(3) with n=324, k=7 and d=207.
This code was found by Heurico 1.16 in 0.0173 seconds.