The generator matrix

 1  0  0  0  1  1  1  1 2X  1  1  1  1  0  1  1 2X  1  1 2X  1
 0  1  0  0  0  1 2X  2  1 2X+1 X+2 2X  2  1 2X  1  1  0  0  1  2
 0  0  1  0  0  2 2X+1  2 2X  X X+1 2X+2 X+1 2X+1 2X+1  0  X X+2 X+2  X  1
 0  0  0  1  1 X+1 2X+2 2X 2X+1  2 2X 2X+2  1 2X X+1 2X+1 X+2  0 X+1 2X+2  2
 0  0  0  0 2X 2X  X  0 2X 2X 2X 2X  X  X  0  X  X  X  0  0  X

generates a code of length 21 over Z3[X]/(X^2) who´s minimum homogenous weight is 33.

Homogenous weight enumerator: w(x)=1x^0+168x^33+468x^34+288x^35+694x^36+1278x^37+708x^38+1340x^39+1884x^40+1308x^41+1906x^42+2724x^43+1422x^44+1722x^45+1872x^46+624x^47+688x^48+510x^49+24x^50+30x^51+12x^52+4x^54+6x^57+2x^60

The gray image is a linear code over GF(3) with n=63, k=9 and d=33.
This code was found by Heurico 1.16 in 1.63 seconds.