The generator matrix

 1  0  1  1  1  1  1  0  1  1  1  0  1  1  0  1  1  0  1  X  1
 0  1  1  2  0  1  2  1 2X+1  0  2  1  X 2X+1  1  2  2  1 X+2  1 2X+2
 0  0 2X  0  0  0  0  0  0 2X 2X  X 2X 2X  X 2X  0 2X  X  0 2X
 0  0  0  X  0  0  0  X 2X  X  0  0  X  0 2X  X  X  X  X  X  0
 0  0  0  0  X  0  X  X  X 2X  X 2X  0 2X 2X 2X  0 2X 2X 2X  X
 0  0  0  0  0 2X 2X  0 2X 2X  X  0 2X  X 2X  0 2X 2X  X 2X  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+162x^33+84x^34+228x^36+480x^37+360x^39+1236x^40+624x^42+1644x^43+468x^45+870x^46+228x^48+60x^49+78x^51+32x^54+6x^57

The gray image is a linear code over GF(3) with n=63, k=8 and d=33.
This code was found by Heurico 1.16 in 2.43 seconds.