The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  X  X  1  X  1  1  1  1  X  1  X
 0  X  0  0 2X X+6 2X+6  X 2X  0  6  3 X+6 2X+6 2X+6 2X+3 X+6 X+3 2X+6  6  6 X+6  0 2X+6  6 2X+6 2X X+6  3 2X+6  6  X X+6
 0  0  X 2X  0 2X+3 X+3  X 2X+3  3 X+3 2X+3 2X+6 X+3  3 2X+3  6 X+3 X+6  X 2X  X X+6 X+3 2X  X 2X  X X+3 X+3 2X 2X+6 2X+6
 0  0  0  3  0  0  6  3  6  6  6  0  6  6  0  6  6  0  0  6  6  0  6  6  0  6  0  6  3  3  0  6  3
 0  0  0  0  3  6  0  3  6  6  6  6  6  3  6  0  0  6  6  3  0  0  6  6  0  0  6  0  6  3  3  0  6

generates a code of length 33 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 57.

Homogenous weight enumerator: w(x)=1x^0+246x^57+18x^58+1080x^60+144x^61+486x^62+2014x^63+1404x^64+1944x^65+4196x^66+2520x^67+1944x^68+2234x^69+288x^70+862x^72+254x^75+32x^78+12x^81+2x^84+2x^87

The gray image is a code over GF(3) with n=297, k=9 and d=171.
This code was found by Heurico 1.16 in 0.904 seconds.